Car Remapping Wales
Custom ECU calibration at Llandow
Custom ECU calibration for supported standard and modified vehicles at our Llandow workshop.
A remap changes the engine control software. We check the vehicle at Llandow, develop the calibration in-house and record how it responds. We have calibrated vehicles since 2004.
The car stays at Llandow while we check the setup, write the calibration and see how it responds.
Custom car remaps in Wales
Remapping for South Wales
We regularly work with customers from Cardiff, Bridgend, Swansea, Newport, Cowbridge, Barry, Llantrisant, the Vale of Glamorgan and surrounding areas.
What can a remap change?
On a suitable engine, calibration can change torque delivery, throttle response and available power. Results depend on the engine, fuel, hardware and condition. Fuel consumption may change with use; we do not promise an MPG gain.
Tell us about hesitation, flat spots or an existing warning before choosing a package. Those symptoms may need fault diagnosis first.
The remapping appointment
- Identify and check the vehicle. Review the engine, ECU, gearbox, service history, modifications and intended use. Existing faults can require separate investigation.
- Read the software. Use the supported OBD, bench or boot method for the ECU. We confirm access requirements before the job.
- Develop and write the calibration. Work from our in-house tuning data and the fitted specification, then write the agreed changes.
- Log and review. Check the response with suitable data logging and, where included in the agreed work, dyno testing. Revise the calibration from the measurements before handover.
Send the registration, engine, fuel normally used and existing modifications for a quote. Software access, preliminary checks and the testing required affect the appointment length.
Custom, off-the-shelf and file-agent tuning
We develop the calibration at Llandow with the car available for measurement and revision. An off-the-shelf product is developed for a defined specification; a file agent installs software supplied by another business. Read our comparison of these services, including the checks to ask about.
What Stage 1, Stage 1+ and Stage 2 mean
These are the packages we publish. Prices are starting prices. Some ECUs and vehicle combinations cost more. Check the car for the exact figure.
Stage 1
A calibration for a healthy standard car. No hardware changes are required. It is the usual starting point for an unmodified car, van or motorhome.
From £250, normally £400.
- Balanced power and torque
- Everyday drivability
- Possible efficiency improvement, depending on the car and how it is driven
Stage 1+
A higher-output calibration for a suitable standard car. It does not require an exhaust, air filter, or any change to the emissions equipment. We check the car's health, the fuel and the logged data before offering it.
From £250, normally £400.
- Higher output than Stage 1 where the standard car can support it
- Vehicle health checked first
- Fuel quality and logging considered
Stage 2
For a car that already has supporting hardware, such as improved airflow, cooling or exhaust. The calibration is written for the parts fitted to that car. We confirm the requirements before the work is agreed.
From £350, normally £500.
- Mapped to the installed hardware
- Developed with dyno and logging work
- Not a published package for a standard car
Stage 3
Stage 3 is a quoted build, not one of the published packages. It usually means major hardware such as a different turbo, injectors, fuel pump or internal engine parts, with the calibration written for that specification. It is discussed per car.
Full lifetime software warranty and tuning risks
Every tune includes a full lifetime software warranty for the original customer. If the MIL comes on, or you notice rough running, misfiring or a driveability problem, contact us first. Bring the vehicle back for a free assessment if it does not drive right after tuning. We provide an included code scan for a post-tuning MIL and make free software changes where these can resolve a tuning-related issue or post-tuning driveability concern.
We remove our tune back to stock free of charge. If a dealer removes or overwrites it, one reinstallation on the same vehicle is included free for the original customer.
No hardware warranty is included at any tuning level. A failed engine, turbo, clutch, gearbox, driveshaft or other mechanical part is outside the software warranty, whether it fails during dyno testing or after you leave. An inspection that finds no faults does not guarantee that a car is safe to tune.
In our opinion, a healthy, maintained Stage 1 vehicle driven normally should experience normal wear. Aggressive driving at any stage increases mechanical stress and the risk of failure. We advise against tuning higher-mileage vehicles, recommend a full mechanical inspection beforehand and matching DSG or automatic gearbox tuning where supported. If you cannot accept the risk or afford repairs, do not tune the vehicle.
Read the full tuning risks, software warranty and hardware exclusions, including dyno cleanup and equipment-damage costs and the option of a separately arranged hardware warranty.
Changes within the engine calibration
The changes depend on the ECU strategy and engine. They can involve fuelling, ignition timing on petrol engines, boost control, torque requests and their interaction with the gearbox. Sensor readings and thermal or mechanical limits need to be considered together.
A shared model badge or engine size does not prove that two cars have identical hardware. We check the fitted specification rather than assume that a lower-output version can use another model’s calibration.
For an existing remap that drives poorly, we can investigate the vehicle and review logs before recommending a revision. A warning or loss of power can also have a mechanical or electrical cause.