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  • BMW X5 M Selected vehicle BMW X5 M F85 X5 M 4.4 V8 Bi-Turbo (2015 - 2018) 575HP Petrol
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Petrol powertrains

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  • Petrol X6 M X6 M S63B44 567HP Petrol 567 hp 750 Nm Engine S63B44T2 View tuning options >
  • Petrol xDrive 35i 305HP Petrol 305 hp 398 Nm Engine N55B30M0 View tuning options >
  • Petrol xDrive 50i 450HP Petrol 450 hp 650 Nm Engine N63B44 View tuning options >

Diesel powertrains

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  • Diesel M50d M50d N57D30 375HP Diesel 375 hp 734 Nm Engine N57S View tuning options >
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  • Diesel xDrive 40d 309HP Diesel 309 hp 623 Nm Engine N57D30T1 View tuning options >
  • Diesel xDrive M50d 375HP Diesel 375 hp 734 Nm Engine N57S View tuning options >
  • Diesel xDrive30d xDrive30d N57D30 256HP Diesel 256 hp 556 Nm Engine N57D30O1 View tuning options >

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Penarth, Cowbridge, Barry, Llantwit Major, Bridgend, Pontyclun, Llantrisant, Pencoed, Rhoose, St Athan, Porthcawl and Cardiff.

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Latest News

  • Audi TT: 177HP to 254HP. The power change followed a custom calibratio...
  • BMW transmission control module update. The owner requested the latest...
  • Free initial scan for engine, AdBlue, DPF and EGR concerns. Bring the...
  • Mini Cooper JCW: 81HP gain with our custom Stage 1 dyno tune. The resu...
  • Citroen Relay: recurring limp mode after previous tuning. Diagnostics...
  • VW Caddy custom Stage 1 dyno session. A £100 discount was advertised a...
  • Just for fun, whom can tell me what make and model of car this engine...
  • Mini R56 Cooper S race setup: 305HP. We spent two days working through...
  • Mercedes C43 AMG: 419HP. We developed the custom calibration on the ca...
  • Porsche Stage 1 calibration and AdBlue/SCR software work. For an exist...
View all news

Technical Resources

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  • Map definitions to WinOLS CSV
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Common Issues

  • BMW N55 Issues
  • VAG 2.0 TFSI Issues
  • AdBlue & SCR Issues
  • EGR Delete Issues

Latest Articles

  • New automatic tuning tools are everywhere. The quality has not kept up
  • Why does my engine lose power or enter limp mode under load?
  • Underboost and P0299: does the turbo need replacing?
  • Why does my engine still misfire after replacing plugs or coils?
  • The 2027 emissions proposals, and what they mean for a remap
  • Post-2020 Ford Transit Custom Tuning Is Now Available
  • Who Actually Writes Your OTS Remap?
  • Do BM3 OTS Maps Really Outperform Custom Tunes?
  • Bosch MD1CS003 tuning protection: locked and unlocked ECU numbers explained
  • The Benefits of Upgrading an Intercooler on a Diesel Engine
View all articles
Llandow Tuning, Llandow Dyno Centre, Unit 11 Sambucus Avenue, Llandow Trading Estate, Llandow, Cowbridge, Vale of Glamorgan, CF71 7PB · 01446 355001
© 2026 Llandow Tuning. Vehicle names, badges and trademarks belong to their respective owners and are used to assist owners in identifying their vehicle. No manufacturer endorsement or affiliation is implied.
Llandow Tuning specialises in vehicle modifications. Our work often involves altering a vehicle from its factory specifications, typically for motorsport or fast road use.
All modifications and tuning are carried out at the owner's risk. Customers should fully understand and accept these risks before work begins.
Dyno and rolling road use is at the owner's risk. Any damage caused to the dyno, dyno cell, or due to fluid spills must be paid for before the vehicle is released.
It is the customer's responsibility to ensure the vehicle is ready for tuning/dyno time and free from fluid leaks unless otherwise agreed in writing beforehand.
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