JM Remapping & Diagnostics
JM Remapping &
Diagnostics
JM Remapping & Diagnostics, specialise in mobile ECU remapping and diagnostic services for car and van enthusiasts who are looking to improve their vehicle’s performance and fuel efficiency. We craft tailored maps to meet your vehicles’ individual needs, including TCU gearbox tuning.
Tuning Options

We're here to help
JM Remapping & Diagnostics can code and program all modules of your vehicle including new ECU’s and LED headlight units and our vehicle tuning and remapping services can vastly improve your car performance.
Our standard service includes vehicle diagnostic and health check, to ensure you can receive the best performance and drivability out of your vehicle.
- Stage 1, 2 and ECO remaps.
- Increased torque.
- Better fuel efficiency.
- We also offer AdBlue, DPF & EGR solutions.
Our advanced service option is for DSG gearboxes only, it includes vehicle diagnostic and health check, also DSG gearbox tune including a vehicle remap.
Discover the power within
JM Remapping & Diagnostics are passionate about optimising performance, enhancing fuel efficiency, and improving your overall driving experience. Our expert team of technicians and cutting-edge diagnostic tools ensure that your vehicle operates at its peak performance.
- Unleash the full potential of your vehicle.
- JM Remapping & Diagnostics.
Trust us to unlock the hidden power within your engine and take your driving to the next level.


Areas we cover in Wales:
- Blaenau Gwent
- Bridgend
- Caerphilly
- Cardiff
- Carmarthenshire
- Ceredigion
- Conwy
- Denbighshire
- Flintshire
- Gwynedd
- Merthyr Tydfil
- Monmouthshire
- Neath Port Talbot
- Newport
- Pembrokeshire
- Powys
- Rhondda Cynon Taf
- Swansea
- Torfaen
- Vale of Glamorgan
- Wrexham