Frequently asked Questions
Using Llandow Tuning
Why should I pick LLANDOW TUNING over another tuning firm?
Quite simply becuase we are the only company operating in Wales that have been offering customer tuning services since 2004.
Every other remap/tuner with a location has at some point been operating as a "mobile remapper" / "file slinger" installing files on behalf of remote companies with nothing remotly custom about the tune.
Whilst there were others offering tuning before us in 2004 in Wales, they don't still exist. Indeed the competitors that have been around nearly as long as us (of which there are two) one is no longer owned by the same people thus the quality is gone through the floor and they have resorted to being a reseller to one of the UKs larger second rate tuner.
Bottom line:
Every other remap/tuner with a location has at some point been operating as a "mobile remapper" / "file slinger" installing files on behalf of remote companies with nothing remotly custom about the tune.
Whilst there were others offering tuning before us in 2004 in Wales, they don't still exist. Indeed the competitors that have been around nearly as long as us (of which there are two) one is no longer owned by the same people thus the quality is gone through the floor and they have resorted to being a reseller to one of the UKs larger second rate tuner.
Bottom line:
- We believe in Quality before Quanity
- We are the longest established
- We are completely independent
- ALL our equipment is Master equipment and we have NEVER owned or had in our POSSESION any equipment from another tuner let alone acted as someone other tuners agent (Nobody else can claim that in Wales)
- We've tuned more car in Wales than any other Welsh based tuner
- We believe that if you come for a free consulation you'll agree with us, that we are the best in Wales
Why should I avoid a Mobile Tuner/Remapper
Mobile Tuners are the sort of UPVC sales men of the Automotive Business, possibly lower than a Used Car Sales man in the pecking order of whom to trust.
The questions you need to ask yourself is:-
The questions you need to ask yourself is:-
- Why doesn't the Mobile Remapper have a workshop?
- When it goes wrong (and it often does), where is the vehicle to be repaired and by whom?
- If the guy bricks the ECU, will you be able to deal with the excuses or just let him disappear?
- Over 90% of Mobile tuner aren't tuners, aren't mechanics, aren't technicans but are simply people that have signed up to a reseller scheme, with a car, a laptop and some money to invest in some tooling. Do you really want that someone playing with your car?
- A mobile tuner cannot perform a custom tune to the vehicle despite all their false promises. How on earth are they to develop and test something custom at the side of the road? The file they load will be from whoever their tool is slaved too. The price might be good, but do you really think it will work as well as a fully developed tune/calibration?
Do we have a Dyno/Rolling Road?
Llandow tuning can offer accurate horsepower and torque measurments for almost any vehicle usig our on-road dyno system.
In Llandow we have two dyno cells offering 2WD vehicle tuning and our tuning partners in Copenhagen and Sula both have a 4WD dynos.
We can cater for any kind of vehicle, even one that doesn't support our chassis dyno by using a sophisticated on-car dyno. We get can results that are as accurate as a chassis dyno but on any wheel configuration.
Every tune for a vehicle with a factory fitted ECU at stage 1 and stage 1+ has been developed on a dyno to ensure maximium peak power is made. A dyno on its own doesn't ensure the amount of power being made is safe, this is what data logging and knock detection equipment is for, which we have and are able to operate on the road or in the dyno cell
In Llandow we have two dyno cells offering 2WD vehicle tuning and our tuning partners in Copenhagen and Sula both have a 4WD dynos.
We can cater for any kind of vehicle, even one that doesn't support our chassis dyno by using a sophisticated on-car dyno. We get can results that are as accurate as a chassis dyno but on any wheel configuration.
Every tune for a vehicle with a factory fitted ECU at stage 1 and stage 1+ has been developed on a dyno to ensure maximium peak power is made. A dyno on its own doesn't ensure the amount of power being made is safe, this is what data logging and knock detection equipment is for, which we have and are able to operate on the road or in the dyno cell
Hourly Rate / Labour Charges
Our tuning team charge £85 per hour + vat
Any work outside the scope of a flat rate service is billed per hour worked.
Tuning at Stage 2 and above is charged as a tuning session and more time may be required in order to develop a satisfactory tune. We do not use book times for billing unless agreed in the form of a written estimate.
We offer a free initial face to face consultation. We may extend a free initial look at the vehicle but if it is free we will EXPILICTY tell you this, in all other cases once we examine a vehicle it is billable and the smallest unit we bill is an hours labour. Typically this will be added to the cost of any work.
Put simply we have to pay the staff, if they work on your car it is chargeable.
Any work outside the scope of a flat rate service is billed per hour worked.
Tuning at Stage 2 and above is charged as a tuning session and more time may be required in order to develop a satisfactory tune. We do not use book times for billing unless agreed in the form of a written estimate.
We offer a free initial face to face consultation. We may extend a free initial look at the vehicle but if it is free we will EXPILICTY tell you this, in all other cases once we examine a vehicle it is billable and the smallest unit we bill is an hours labour. Typically this will be added to the cost of any work.
Put simply we have to pay the staff, if they work on your car it is chargeable.
Tuning Session Costs
Our Tuning Sessions cost £450 + vat and last a half day
Work outside the scope of the tuning session is billable per hour
If you book a tuning session and the vehicle is un-tunable and you haven't had an engine check over service performed by us in advance then a session fee is payable as the tooling and staffing have been booked and we won't be able to rebook at such a short notice
We recommend anyone booking for a tuning session has an engine checkover performed which starts at £95
Work outside the scope of the tuning session is billable per hour
If you book a tuning session and the vehicle is un-tunable and you haven't had an engine check over service performed by us in advance then a session fee is payable as the tooling and staffing have been booked and we won't be able to rebook at such a short notice
We recommend anyone booking for a tuning session has an engine checkover performed which starts at £95
Estimates and Quotes
We are happy to provide a written estimate for work.
We will give a written informal estimate as a guide price. If you are happy with the price we will be happy to give a formal written estimate.
If the estimate is going to take us more than 15 minutes (in our opinion) to generate then we will ask for an "estimate fee". If you authorise the work, we will take the fee off any work done.
Why do we do this? Becuase we get lots of people asking for estimate for work we know they will never have done, aka pipe dreamers.
We will give a written informal estimate as a guide price. If you are happy with the price we will be happy to give a formal written estimate.
If the estimate is going to take us more than 15 minutes (in our opinion) to generate then we will ask for an "estimate fee". If you authorise the work, we will take the fee off any work done.
Why do we do this? Becuase we get lots of people asking for estimate for work we know they will never have done, aka pipe dreamers.
Money Back Guarantee
I appreciate a lot of tuning centers operate such a scheme. We do not.
You pay for our time in tuning the vehicle.
If for whatever reason you want a tune modified with the first week, we will do this with pleasure.
For example if you want pops and bang and they aren't loud enough, we will make them louder. If its impossible to make them any louder you don't get a refund.
For example if you bring us a car and we are unable to tune it for whatever reason, you will not be billed.
If we put a stage 1 or stage 1+ map on your car and you don't like something about it, we're happy to tweak it. However each and every map has been tested on a dyno and with nearly all cars the basis tune has already been used on other vehicles. We don't offer a moneyback guarantee, you are paying for our time not the outcome.
Put simply, we won't bill you if we cannot do a job. But once the tune has been done, its done.
You pay for our time in tuning the vehicle.
If for whatever reason you want a tune modified with the first week, we will do this with pleasure.
For example if you want pops and bang and they aren't loud enough, we will make them louder. If its impossible to make them any louder you don't get a refund.
For example if you bring us a car and we are unable to tune it for whatever reason, you will not be billed.
If we put a stage 1 or stage 1+ map on your car and you don't like something about it, we're happy to tweak it. However each and every map has been tested on a dyno and with nearly all cars the basis tune has already been used on other vehicles. We don't offer a moneyback guarantee, you are paying for our time not the outcome.
Put simply, we won't bill you if we cannot do a job. But once the tune has been done, its done.
Refunds
We don't do a try before you buy
We don't offer refunds at all
You pay for our time, if you don't like the idea of that then please don't use us.
We don't offer refunds at all
You pay for our time, if you don't like the idea of that then please don't use us.
Aborted Tuning Sessions
If a car is booked in for a tuning session and the session is aborted for any reason outside of our control. I.e. there is an issue with the car preventing us tuning it safely, or the tuning will be distored by a fault with the car. The full session price applies
We are mindful that we don't want to upset customers, and we will work with them to get around it. But if an agreement cannot be made for a route going forward then the fee will simply apply
We are mindful that we don't want to upset customers, and we will work with them to get around it. But if an agreement cannot be made for a route going forward then the fee will simply apply
Something is wrong with my car after tuning
Pop in with the car. We will offer our opinion. Anything Stage 1 will be easy to rectify and anything wrong with our software will be fixed for free.
Please read the "Post Tuning Questions" section of this FAQ to find out more.
If you have a modified car i.e. Stage 2 or with a Built or Forged engine or standalone ECU then I refer you to the warranty section and the modified vehicle section of this FAQ.
Please read the "Post Tuning Questions" section of this FAQ to find out more.
If you have a modified car i.e. Stage 2 or with a Built or Forged engine or standalone ECU then I refer you to the warranty section and the modified vehicle section of this FAQ.
Vintage / Classic Cars / Carbs
What are the essentials before tuning a car with Llandow Tuning
- A sound exhaust free of leaks
- A round exhaust outlet or an O2 sensor bung. O2 sensor bung would be more ideal
- Free of oil liquid leaks expect where agreed in advance
- New points in the distributor if points are used
- A sound carb, i.e. one which isn't worn out
- A method to control the fuel pressure to the carb or injectors
- A FULL tank of fuel
- A new set of spark plugs
If we abort a tuning session or diagnostic becuase of the above, it is still billable
Should I start with an engine Checkover?
Yes, if you book for a tuning session and it cannot be done then the tuning session fee applies. It makes no sense to start with a tuning session without first making sure the engine can actually be tuned.
We don't like giving people bills of £450 but if you book a tuning session and the car has an issue we reserve the right to do just that.
We don't like giving people bills of £450 but if you book a tuning session and the car has an issue we reserve the right to do just that.
Tuning Sessions vs Engine checkover
If during an engine checkover we can turn a screw and adjust something and the car runs right, we aren't implying its tuned correctly.
A full tuning session will assess the cars tuning completly. We will establish a baseline and work from there with different jets, timing or injection timing to get it as good as we possibly can.
The engine checkover is designed to check the vehicle, give our opinion on things that need to be done PRIOR to an engine tuning session. It may well be that we can adjust the carb or ignition to make the car run BETTER but it is not done so in a way which you can consider its checked. Its best effort.
A full tuning session will assess the cars tuning completly. We will establish a baseline and work from there with different jets, timing or injection timing to get it as good as we possibly can.
The engine checkover is designed to check the vehicle, give our opinion on things that need to be done PRIOR to an engine tuning session. It may well be that we can adjust the carb or ignition to make the car run BETTER but it is not done so in a way which you can consider its checked. Its best effort.
I have a non standard classic car can we help?
Yes but see our modified vehicle section. If your vehicle has a standalone ECU or isn't OE factory spec then our approach is different
Modified/Race/Stage 2/Stage 3/Standalone ECU powered Vehicles
Word of Warning for all Stage 2 and above / Motorsport Tuning
Tuning doesn't guarantee an outcome, it is a process. If you need a flat rate service, don't use us.
Faults develops with cars, nobody wants a car to develop a fault but the more you push an engine the more likely it is that a fault will occour
Any tuned vehicle is going to present more issues for the owner than a stock one, at Stage 2 / Motorsport level you should fully understand this before you begin.
Faults develops with cars, nobody wants a car to develop a fault but the more you push an engine the more likely it is that a fault will occour
Any tuned vehicle is going to present more issues for the owner than a stock one, at Stage 2 / Motorsport level you should fully understand this before you begin.
How do we charge for tuning at this level?
We charge tuning sessions at £450 which is half a day.
Should more than half a day be needed, it will be chargable.
At stage 2 we often offer discounts on the tuning session cost, however should the vehicle need more work than can be done in half a day, it is still billable unless otherwise agreed.
We charge per hour, £75 an hour. We can also book the dyno for tuning in half day segments via a tuning session.
We do not guarantee any outcome with our tuning services. For example should you come in for a days tuning and you find an anomolay or running issue we may bill per hour.
We don't do freebies. It is your car, we can help but our labour rate is £75 per hour. We are open to discussing discounts to the labour rate, no harm is asking.
Be advised that we don't accept any warranty claims on any kind of modified vehicle and ALL our time is billable
At stage 2 we often offer discounts on the tuning session cost, however should the vehicle need more work than can be done in half a day, it is still billable unless otherwise agreed.
We charge per hour, £75 an hour. We can also book the dyno for tuning in half day segments via a tuning session.
We do not guarantee any outcome with our tuning services. For example should you come in for a days tuning and you find an anomolay or running issue we may bill per hour.
We don't do freebies. It is your car, we can help but our labour rate is £75 per hour. We are open to discussing discounts to the labour rate, no harm is asking.
Be advised that we don't accept any warranty claims on any kind of modified vehicle and ALL our time is billable
I've fitted a different engine or added a turbo/supercharger
Yes we can help. But if you've had the modifctions done for you or done it yourself without consulting us it may be necessary for more mods in order to tune the car
There may be many issues which prevent us tuning it, these will be addressed as part of the tuning process
For example if you've fitted a turbo or forced induction to an engine where the car didn't have such features from the factory we may need to modify elements of the vehicle in order to make it fit, or to access parts of the system.
Another example would be you've fitted different carbs and to access them an access panel must be fitted. Sometimes the carb is fitted right up against a bulkhead. Yes the carb can be removed but if we have to remove it 100 times to try different jets
AFR readings are also needed, we highly recommend that an O2 sensor port be fitted to the exhaust manifold or very near to it.
There may be many issues which prevent us tuning it, these will be addressed as part of the tuning process
For example if you've fitted a turbo or forced induction to an engine where the car didn't have such features from the factory we may need to modify elements of the vehicle in order to make it fit, or to access parts of the system.
Another example would be you've fitted different carbs and to access them an access panel must be fitted. Sometimes the carb is fitted right up against a bulkhead. Yes the carb can be removed but if we have to remove it 100 times to try different jets
AFR readings are also needed, we highly recommend that an O2 sensor port be fitted to the exhaust manifold or very near to it.
Track/Race Car back to Road Car
We can help you get a race car back on the road, but be advised there are normally a lot of issues with doing such conversaions. Most often we find the buyer of the said vehicle doesn't really understand what has been done, why its been done and what needs to be done to make it drive nice on the road.
Exepct ongoing issues, we can help with this but like everything its done on an hourly basis.
Exepct ongoing issues, we can help with this but like everything its done on an hourly basis.
Whats the most common issue that prevent tuning?
Exhaust Leaks. Its far better to fit an AFR sensor bung in the exhaust manifold or just after. It will give far better readings and result in more power and safer engine running.
Do we offer a warranty on Stage 2 / Custom / Race / Built Engine Tuning?
No
Then Llandow tuning provides no warranty for your engine or drivetrain during or following any tuning and is done entiry at your own risk.
The very nature of such engines means there is always risk they could blow up or break and as such we don’t provide any warranty.
As a customer you agree to bring no claims against us following or during any tuning work.
For example: If you have a modified engine that we tune, the tuning we provide will be best effort. There is no guarantee that it won’t blow up on the dyno nor that it won’t blow up after its left.
By using us for tuning, you don't get some warranty and entitle you to claim against us as if we were the supplier of the engine or the engine builder.
We generally make recommendations during or after any tuning session which it is for the owner of the said vehicle to follow up on.
If we supllied the ENGINE, ECU and DID THE TUNING. Then we will give a 3 month road warranty, but there is no warranty with builds for race engines or cars with exterme builds. Any such warranty would be on your paperwork.
Then Llandow tuning provides no warranty for your engine or drivetrain during or following any tuning and is done entiry at your own risk.
The very nature of such engines means there is always risk they could blow up or break and as such we don’t provide any warranty.
As a customer you agree to bring no claims against us following or during any tuning work.
For example: If you have a modified engine that we tune, the tuning we provide will be best effort. There is no guarantee that it won’t blow up on the dyno nor that it won’t blow up after its left.
By using us for tuning, you don't get some warranty and entitle you to claim against us as if we were the supplier of the engine or the engine builder.
We generally make recommendations during or after any tuning session which it is for the owner of the said vehicle to follow up on.
If we supllied the ENGINE, ECU and DID THE TUNING. Then we will give a 3 month road warranty, but there is no warranty with builds for race engines or cars with exterme builds. Any such warranty would be on your paperwork.
Leasing and Warraty Questions
Will Tuning my vehicle invalidate my warranty?
Yes. There are no ifs or buts about it. If you modify your vehicle, your manufacturer warranty could be null and void. But lets say you have a "tune" on your engine and your exhaust falls off. That is still going to be covered. The issue you will have is what is and what is not is open to debate.
Can I tune a leased vehicle?
If you want to tune a leased vehicle, remember you are not the legal owner.
You will need to return the vehicle to stock condition prior to handing it back or purchase it outright at the end of the lease.
It is well reported by the press that BMW sends customers bills for immeadetate payment to clear outstanding finance on a vehicle when they discover it has been modified.
You will need to return the vehicle to stock condition prior to handing it back or purchase it outright at the end of the lease.
It is well reported by the press that BMW sends customers bills for immeadetate payment to clear outstanding finance on a vehicle when they discover it has been modified.
Can the Dealer refuse to work on a tuned car?
Yes. And honestly they do often. If you modify a vehicle with a tune and the dealer finds out, they might just simply turn you away as they don't want the hassle of warranty claims or liability that might arise from your modifications.
Should I tell my insurer?
Yes. You should tell them or you risk any modifications resulting in your insurance being invalid. That said, we've worked with many insurance inspections and their opinion can be boiled down to "When is a modification, a modification?"
i.e. You've put a set of cheap tyres on the car, that aren't approved?
Maybe you've installed a steering wheel cover, is that a modication?
You've installed different alloy wheels or changed their colour?
I think the point is, a small remap to gain a few HP or sticking a turbo on the car or making a V6 into V12 may have different impacts.
What about if your car has been modified before you bought it? Does that invalidte your insurance too?
In any case, it is probably best to ask your insurer what they think.
i.e. You've put a set of cheap tyres on the car, that aren't approved?
Maybe you've installed a steering wheel cover, is that a modication?
You've installed different alloy wheels or changed their colour?
I think the point is, a small remap to gain a few HP or sticking a turbo on the car or making a V6 into V12 may have different impacts.
What about if your car has been modified before you bought it? Does that invalidte your insurance too?
In any case, it is probably best to ask your insurer what they think.
Can I hide my tune from the dealer?
If you want to tune your vehicle whilst it is under warranty or leased then there are a number of approachs. The most important is to avoid going to dealer where possible. Avoid software updates online and simply remove the software before any visits to the dealer for warranty work.
This is perhaps another reason to go to an established tuner rather than a chap with a laptop on a car park.
This is perhaps another reason to go to an established tuner rather than a chap with a laptop on a car park.
The bottom line with Tuning and Warranty Claims
If you have a factory warranty on your road car, tuning the car will generally invalidate any factory warranty.
If you have a built or modified engine, then natrually it will need tuning. Any warranty is with the engine builder not with us. We do not offer a warranty just becuase we turned it. What we do we do on each car and there is an element of trust. We trust that the engine is built right and we do what we do to every engine and tune it to certain standards.
If you have a standalone ECU we will provide a degree of warranty for the hward if we supplied and installed it.
If you need a warranty on a standalne ECU with a built then then we will offer this WHERE WE HAVE SUPPLIED AND BUILT THE ENGINE AND PROVIDED ALL HARDWARE AND TUNING. Otherwise it is all at your own risk.
If you have a built or modified engine, then natrually it will need tuning. Any warranty is with the engine builder not with us. We do not offer a warranty just becuase we turned it. What we do we do on each car and there is an element of trust. We trust that the engine is built right and we do what we do to every engine and tune it to certain standards.
If you have a standalone ECU we will provide a degree of warranty for the hward if we supplied and installed it.
If you need a warranty on a standalne ECU with a built then then we will offer this WHERE WE HAVE SUPPLIED AND BUILT THE ENGINE AND PROVIDED ALL HARDWARE AND TUNING. Otherwise it is all at your own risk.
What to do if there is an issue with your car post tuning.
Stop driving it and bring it back up to us. We will take a look at it for free and give you some advise on what to do next. It is up to you on whether you take of advise but we might for example with a modified vehicle give you our opinion on parts which need to be replaced or added or work that needs to be done to move forward.
With a stock road car. we will in most cases be able to help make a test plan to move forward.
With a stock road car. we will in most cases be able to help make a test plan to move forward.
Tuning Questions
Can the Tune/Map be removed?
Yes, we can remove any map we have installed once for free with little notice. We recommend you remove any map from the vehicle prior to visiting the dealer. They might refuse to work on your car.
If you've had the map removed more than once we may charge a £95 removal/restoration fee. (i.e. where you've been to the dealer for work etc)
We don't offer refunds on any work done, our fees cover our labour not the outcome.
When we remove a remap, it will be to restore the vehicle to the software it arrived with, options like Adblue/DPF will also be restored.
If you've had the map removed more than once we may charge a £95 removal/restoration fee. (i.e. where you've been to the dealer for work etc)
We don't offer refunds on any work done, our fees cover our labour not the outcome.
When we remove a remap, it will be to restore the vehicle to the software it arrived with, options like Adblue/DPF will also be restored.
Will Tuning my Car damage it?
Not if it is tuned correctly. This is the whole reason a dyno exisits. To check and test the tune installed on a vehicle. Whilst we and our partners have developed thousands of tunes on every kind of car possible, can somebody with a laptop that knows nothing about how a car really works offer you the same guarantee?
It is also worth checking the "Will My Car wear out quicker?" question as there are other issues to consider.
It is also worth checking the "Will My Car wear out quicker?" question as there are other issues to consider.
Will My Car wear out quicker?
It depends on the type of tuning and how it’s done. A properly tuned engine, where adjustments are made within the manufacturer’s safe limits, shouldn’t significantly accelerate engine wear. In fact, many performance tunes are designed to optimize efficiency without causing excessive strain on the engine.
However, aggressive tuning that pushes the engine beyond its designed limits—such as increasing turbo boost, altering fuel maps, or raising RPM limits—can put additional stress on engine components like the turbocharger, pistons, and transmission. This can lead to faster wear if not managed carefully.
Really it comes down to how you drive the car, drive it Flat out everywhere and its going to wear out quicker than driving it slowly. Drive it flat out everywhere after a remap or some kind of tuning and it will wear quicker still.
However, aggressive tuning that pushes the engine beyond its designed limits—such as increasing turbo boost, altering fuel maps, or raising RPM limits—can put additional stress on engine components like the turbocharger, pistons, and transmission. This can lead to faster wear if not managed carefully.
Really it comes down to how you drive the car, drive it Flat out everywhere and its going to wear out quicker than driving it slowly. Drive it flat out everywhere after a remap or some kind of tuning and it will wear quicker still.
Fuel Economy
We get reports of around a 5 MPG increase on average from customers with a Stage 1 Map.
Whilst we get these reports we do not guarantee a fuel economy increase
However gains are 100% linked to your driving style. If you drive the car in a manner where the engine detects high levels of load it will without a doubt use more fuel after a typical stage 1 map.
We do offer a DIESEL ECO Only Map which is a Stage 1 Map minus the typical high end HP gains which will bascially mean we DO NOT add any fuel or addtional boost and simply limit the tune to making more low end torque and making the cruise leaner.
Whilst we get these reports we do not guarantee a fuel economy increase
However gains are 100% linked to your driving style. If you drive the car in a manner where the engine detects high levels of load it will without a doubt use more fuel after a typical stage 1 map.
We do offer a DIESEL ECO Only Map which is a Stage 1 Map minus the typical high end HP gains which will bascially mean we DO NOT add any fuel or addtional boost and simply limit the tune to making more low end torque and making the cruise leaner.
Stage 1, 2 and 3 explained
- Stage 1 is the basic level of Tuning a vehicle where no modifications have been made to any engine system. It is completly safe and will not require you to change how you look after the vehicle
- Stage 1 + is the next level, typically you need to modify the exhaust system to get to Stage 1+. Modiciations that enable a Stage 1+ map include DPF and EGR Deletes.
- Stage 2 capablity is reached when you add inducation modifications like updated Intercoolers, Air Filters, Induction Pipes etc
- Stage 3 incorporates everything above stage 2. The kind of modifcations range from larger turbos to a wild cams. It really means VERY CUSTOM.
Will Deleting my EGR affect my DPF?
Yes, deleting the EGR (Exhaust Gas Recirculation) can affect the DPF (Diesel Particulate Filter), though the outcome depends on your engine’s design and ECU (Engine Control Unit) programming.
In many modern diesel engines, the EGR and DPF systems are closely integrated. The EGR reduces NOx emissions by recirculating exhaust gases back into the engine, which lowers combustion temperatures. Disabling or deleting the EGR may alter the engine's exhaust composition and temperature profile, potentially impacting the DPF’s ability to regenerate. It is also common for the EGR off solution to impact the DPF regen process directly, thus disabling it.
Regeneration is crucial for the DPF to burn off soot and maintain efficiency. If the DPF doesn't reach the required temperatures for regeneration—either because of changes in exhaust gases or altered ECU behavior—it can become clogged, leading to performance issues or even failure.
We’ve seen many automated EGR-delete solutions that inadvertently cause DPF regeneration failures. Therefore, it's important to assess this on a case-by-case basis and ensure that any modification to the EGR system is compatible with the rest of the vehicle’s emission control systems.
Whilst many tuners will have differing opinions, it is our opinion that as a rule, deleting the EGR and leaving the DPF in place is generally going to cause issues long term with the DPF and anyone telling you that there is zero risk doesn't understand the full implications of what they are doing.
In many modern diesel engines, the EGR and DPF systems are closely integrated. The EGR reduces NOx emissions by recirculating exhaust gases back into the engine, which lowers combustion temperatures. Disabling or deleting the EGR may alter the engine's exhaust composition and temperature profile, potentially impacting the DPF’s ability to regenerate. It is also common for the EGR off solution to impact the DPF regen process directly, thus disabling it.
Regeneration is crucial for the DPF to burn off soot and maintain efficiency. If the DPF doesn't reach the required temperatures for regeneration—either because of changes in exhaust gases or altered ECU behavior—it can become clogged, leading to performance issues or even failure.
We’ve seen many automated EGR-delete solutions that inadvertently cause DPF regeneration failures. Therefore, it's important to assess this on a case-by-case basis and ensure that any modification to the EGR system is compatible with the rest of the vehicle’s emission control systems.
Whilst many tuners will have differing opinions, it is our opinion that as a rule, deleting the EGR and leaving the DPF in place is generally going to cause issues long term with the DPF and anyone telling you that there is zero risk doesn't understand the full implications of what they are doing.
Will pops and bangs affect my engine?
Yes, pops and bangs can affect your engine, especially over time. While this feature can be appealing for its aggressive sound, it alters how unburnt fuel is ignited in the exhaust, which creates the popping noise. This can lead to increased stress on the engine, turbo, and exhaust components due to higher temperatures and pressure.
Long-term use of pops and bangs can result in wear on the catalytic converter, potential damage to the turbocharger, and carbon buildup in the exhaust system. It’s essential to ensure that the tuning is done properly and is safe for your specific engine. If overused or improperly tuned, it could shorten the lifespan of certain engine parts.
If you want the pops and bangs feature, we're happy to do it, but it's at your risk.
Long-term use of pops and bangs can result in wear on the catalytic converter, potential damage to the turbocharger, and carbon buildup in the exhaust system. It’s essential to ensure that the tuning is done properly and is safe for your specific engine. If overused or improperly tuned, it could shorten the lifespan of certain engine parts.
If you want the pops and bangs feature, we're happy to do it, but it's at your risk.
Will a Hard cut limiter on a diesel cause any issues?
A hard cut limiter abruptly cuts fuel at the set RPM limit, which can cause significant stress on engine components. This abrupt cut-off can increase wear on the turbocharger, fuel system, and other components due to sudden changes in pressure and combustion forces. It can also result in higher exhaust temperatures, which might damage the turbo and exhaust system over time.
It can in some cases cause stress on the engines timing compontents also.
If you want the Hardcut feature, we're happy to do it, but it's at your risk.
It can in some cases cause stress on the engines timing compontents also.
If you want the Hardcut feature, we're happy to do it, but it's at your risk.
How long does a Stage 1 Remap take to install?
Read our timescale section below.
Timescales
Stage 1 Tuning Timescales
In most cases we aim to get the job done within 2 hours, a little longer for rarer ecus or where its been tuned/modified in the past
Stage 2 Tuning Timescales
In most cases we aim to get the job done within 4 hours, a little longer for rarer ecus or where its been tuned/modified in the past
Stage 3 and above and Standalone ECU Tuning Timescales
Typically, we charge for half-day or full-day tuning sessions. However, completing the tuning process may take anywhere from a couple of days to a week. This is because we often need to conduct tests when the car is cold, which requires an overnight period and sometimes it just takes time to complete.
In our experience, we strongly advise against using a Stage 3 car as a daily driver if it is your ONLY car. If that's your intention, we would prefer not to take on the job. What may seem like a quick fix can often be more complex than anticipated, and we want to avoid any misunderstandings or complications.
In our experience, we strongly advise against using a Stage 3 car as a daily driver if it is your ONLY car. If that's your intention, we would prefer not to take on the job. What may seem like a quick fix can often be more complex than anticipated, and we want to avoid any misunderstandings or complications.
What is the expected timeframe for Mechanical repairs/fitting parts?
We cannot guarantee the exact time it will take to repair your vehicle. Unlike larger or fast fit garages, we operate with a smaller team and often have a full booking schedule, which can affect the completion time of each repair. Our top priority is to ensure that every job is done thoroughly, and we will take the necessary time to address any issues both during the repair and after the vehicle leaves our care.
If parts need to be ordered and a deposit hasn't been made, please note that parts will only be ordered once your vehicle is on-site.
Additionally, if you've purchased aftermarket or upgraded parts, please be aware that these may not fit as expected, they could take longer to arrive and they might need to be sent back and reordered. We advise accepting this potential delay, or alternatively, you may supply your own parts for installation.
If you're in need of a quick repair, we recommend considering new parts directly from the manufacturer or, in some cases, visiting a dealership for faster service.
If parts need to be ordered and a deposit hasn't been made, please note that parts will only be ordered once your vehicle is on-site.
Additionally, if you've purchased aftermarket or upgraded parts, please be aware that these may not fit as expected, they could take longer to arrive and they might need to be sent back and reordered. We advise accepting this potential delay, or alternatively, you may supply your own parts for installation.
If you're in need of a quick repair, we recommend considering new parts directly from the manufacturer or, in some cases, visiting a dealership for faster service.
Discounted labour rate for adhoc/trade work
We will sometimes offer a discounted or trade labour rate which will be offered only on the basis of a trade transaction, i.e. non consumer/business but business to business
It will be provided on the basis that we get to the job when we get to it, inbetween other jobs. No timescale will be provided
It will be provided on the basis that we get to the job when we get to it, inbetween other jobs. No timescale will be provided
Tuning Boxes
What is a Tuning box?
They are devices installed on one or two sensors connected between the Engine and Engine ECU to fool the ECU into doing something to typically add more fuel.
The Tuning Box company claim more power than a Remap
Quite simply, they are selling snakeoil. The box does nothing but tricks the ECU into overfueling. Sometimes they include pretty Apps to control some of the settings from a Mobile. But rest assured their efforts are all hogwash as are their promises.
Will a Tune/Remap deliver more power than a tuning box?
Yes, it will offer substabically more power and if driven right better fuel economy as we modify maps that effect a lot more than simply the fuel pressure.
If you have a tuning box connected to the fuel rail we will offer you a full money back guarantee that we can improve the performance of the car using a remap/tune. How about if we don't get more power than the tuning box we won't charge you?
If you have a tuning box connected to the fuel rail we will offer you a full money back guarantee that we can improve the performance of the car using a remap/tune. How about if we don't get more power than the tuning box we won't charge you?
Are tuning boxes safe?
No they block your DPF, make you use more fuel and will damage over time your injectors, fuel rail, pressure sensors and high pressure fuel pump.
If you have one fitted, rip it out.
If you have one fitted, rip it out.
Putting Facts back in to Tuning
What is Tuning vs a Remaping vs Chipping
- Tuning is simply the modification of a vehicles engine to perform better
- Remapping is a term used to describe modifying a Map or Curve on the Engine ECU to perform some effect. Sometimes more power, indeed sometimes less.
- Chipping or Chip Tuning is a term from an older age where we had to remove the old PROM or EPROM from the vehicle modify it and place it back in, I suppose the term started in the Eighties with the advent of ECU's and all those firms supplying in "super chips"
What is wrong with using a Agent/Mobile Remapper?
The truth is, they don't have a clue what they are doing. Yes they can be good snake oil salesmen and talk the talk. Yes they can load on to your car a "remap" from some guy the other side of the internet but you must ask yourself a number of questions.
- Is it a £4 bottle of plonk or a £20 bottle?
- How has the file been tested?
- What does the person installing the remap know about cars? Can he perform an initial inspection to ensure there isn't some underlaying issue with the car?
- If it all goes wrong and he bricks the ECU, what is he going to do about it? Does he have the equipment to fix it? Is he simply going to do a runner? Or might he just pass the buck and blame the car. Don't worry if this happens call us, we fix lots of "tuned" cars
Why can't other tuners agents "Custom Tune" my car
Quite simply becuase they are using "Salve Tools". The tools used to read and write to the Engine ECU come in two forms "Master" and "Slave". Slave tools encrypt the ECU contents which then needs to be sent off to the "Master" tool holder. Therefore the person doing the tune cannot modify the contents becuase they don't have access to the contents.
Naturally we have master tooling so we modify each and every files inhouse.
Naturally we have master tooling so we modify each and every files inhouse.
Does my car need to go on a Dyno?
Not in every case, but it should be tested and data logged. We will have done tuning on a similar vehicle so when your car comes in we will already have a baseline to start with.
We try and get every car on the dyno, but sometimes it is just impractical, maybe its too big or wone of our dyno cells is already in use.
The point is every remap/recalibration should be tested, it should have data to backup the mods that have been made and there should be a degree of testing to make sure you won’t have issues 5 minutes after driving away.
We try and get every car on the dyno, but sometimes it is just impractical, maybe its too big or wone of our dyno cells is already in use.
The point is every remap/recalibration should be tested, it should have data to backup the mods that have been made and there should be a degree of testing to make sure you won’t have issues 5 minutes after driving away.
Does Llandow tuning have dealer tooling?
Yes we have dealer tooling for nearly every make and model of vehicle. We aren't talking about "snap on" or "autel" or "launch" do everything tools but the real deal.
BMW/Merc/VAG. Ford, Jaguar, Land Rover, Vauxhal, PSA/Citroen, Fiat, Maserati, Ferrari, GM, Nissan, Subaru, Honda. You name it we have it.
Post Tuning Questions
Post Tuning Support Stage 1 and Stage 1+
We offer full aftersale support for Road Cars running our Stage 1 and Stage 1+ Software. Pop back in should there be an issue and we will provide a free initial assesment. This will include a code scan and plan on what to do next
Should any tuning modifications be needed at Stage 1 or Stage 1+ to get the car driving without any MILs or limp mode conditioe, these mods are provided completly free of charge.
Should any issues be found which aren't related to our software then we will include up to an hours labour free of charge to address these for you, diagnostic time over an hour is billable at hour hourly rate.
Common issues we find include: Blown Hoses, Faulty Injectors, Fuel Pumps and underperforming turbos
If faults are found with a car and you opt to repair them yourself or take it to another garage then we will happily perform tuning on your car again, but a fee will be payble for our time. In all cases where there was a fault with a car, a full tuning fee is payable after 3 months should you require addtional tuning.
Should any tuning modifications be needed at Stage 1 or Stage 1+ to get the car driving without any MILs or limp mode conditioe, these mods are provided completly free of charge.
Should any issues be found which aren't related to our software then we will include up to an hours labour free of charge to address these for you, diagnostic time over an hour is billable at hour hourly rate.
Common issues we find include: Blown Hoses, Faulty Injectors, Fuel Pumps and underperforming turbos
If faults are found with a car and you opt to repair them yourself or take it to another garage then we will happily perform tuning on your car again, but a fee will be payble for our time. In all cases where there was a fault with a car, a full tuning fee is payable after 3 months should you require addtional tuning.
Post Tuning Support Stage 2 and Stage 3 Vehicle Running Factory Engine ECUs
If there is an issue with the vehicle. Pop back in should there be an issue and we will provide a free initial assesment. This will include a code scan and plan on what to do next we will include up to an hours labour free of charge to diagnoise these for you, diagnostic time over an hour is billable at hour hourly rate.
Should any tuning modifications be needed at Stage 2 i.e. you've driven the car and want something tweaked or aren't happy with how the vehicle performs be advised this are chargeable at our hourly rate. Natrually if a vehicle requires a quick modification we typically do this for free.
Should the vehicle require any addtional datalogging i.e. in an attempt to diagnoise the vehicle and any symptons this is chargeable at our hourly rate.
Should the vehicle require any addtional datalogging i.e. in an attempt to diagnoise the vehicle and any symptons this is chargeable at our hourly rate.
I have had a MIL light come on
Pop in whenever you a free and we will perform a code scan without charge.
My car is subject to a recall, what should I do?
If it is under warranty pop in for us to restore the orignal software, after the recall pop back and we will put your map back on.
We are happy to do this once without charge
If it is outside of warranty then just leave it as it is and allow the dealer to do what they need to do and if the map is removed we will install it again once without charge.
We are happy to do this once without charge
If it is outside of warranty then just leave it as it is and allow the dealer to do what they need to do and if the map is removed we will install it again once without charge.
The fuel economy is worse since you remapped my car
There can be a number of reasons for this:-
a) The DPF is partically blocked and is performing more regens, this is unrelated to the remap
b) There is an airleak in the induction system resulting in more fuel being used
d) There is a problem with a fuel injector, this is unrelated to the remap
d) You are driving the vehicle making use of the extra torque and power that has been added but in a non fuel efficent way.
In all cases we only add extra fuel when engine load is about 70%. Thus the remap will only cause more fuel to be used when load is that high, ultimately it is down to where you put your foot. We typically add 5% more fuel at HIGH RPM when under heavy load/acceleration, the rest of the fueling maps remain the same, thus increase fuel economy due to the remap is impossible without the driver directly requesting more acceleration/power
If requested we will remove any remap from a car once without charge.
a) The DPF is partically blocked and is performing more regens, this is unrelated to the remap
b) There is an airleak in the induction system resulting in more fuel being used
d) There is a problem with a fuel injector, this is unrelated to the remap
d) You are driving the vehicle making use of the extra torque and power that has been added but in a non fuel efficent way.
In all cases we only add extra fuel when engine load is about 70%. Thus the remap will only cause more fuel to be used when load is that high, ultimately it is down to where you put your foot. We typically add 5% more fuel at HIGH RPM when under heavy load/acceleration, the rest of the fueling maps remain the same, thus increase fuel economy due to the remap is impossible without the driver directly requesting more acceleration/power
If requested we will remove any remap from a car once without charge.
Warranty and Issue Resolution Policy
Warranty Work
All warranty work must be performed by our team. Please do not authorize any other party to work on your vehicle on our behalf. We will not issue refunds without prior approval.
Please be aware whilst we are happy to examine any tuning that has been done, other than stage 1 all modifications will be chargeable unless otherwise agreed at the time of tuning.
Please be aware whilst we are happy to examine any tuning that has been done, other than stage 1 all modifications will be chargeable unless otherwise agreed at the time of tuning.
Reporting Issues
If you encounter any issues, please contact us via email, WhatsApp, or visit us in person with your vehicle. We will assess the situation, and any concerns regarding our workmanship or parts supplied will be addressed.
In all instances the vehicle must return to us to examine it
In all instances the vehicle must return to us to examine it
Non-Related Issues
If we determine that any issue is not related to our work, a diagnostic fee will be charged. Additionally, if you authorize it, labor costs for any necessary repairs will apply.
Independent Evaluation
If you are not satisfied with our assessment, you may leave your vehicle with us, and we will promptly arrange for an independent expert to conduct an inspection. If the expert’s findings support our position, a fee of £200 will be applied. However, if the expert identifies any fault on our part, we will fully address the issue, including supplying any necessary parts, based on their recommendations.
Please note that we will only accept reports from third parties that have been agreed upon with us in writing before the report is created.
If you disagree with the findings of the expert we arrange, you are welcome to select another accredited independent examiner for a third opinion but this would need to be paid for and arranged by you independently.
Please note that we will only accept reports from third parties that have been agreed upon with us in writing before the report is created.
If you disagree with the findings of the expert we arrange, you are welcome to select another accredited independent examiner for a third opinion but this would need to be paid for and arranged by you independently.