Car Engine Remapping: Stage 1, 2, 3

Select the make and type of the vehicle you want to remap.

What is engine remapping?

Engine remapping consists of optimising a vehicle’s performance by modifying the parameters of the original engine control unit (ECU). This process allows you to increase power and torque, resulting in reduced fuel consumption under the same driving conditions, while staying within the engine’s operating limits.

At RS-Tronic, we carry out ECU remapping (or engine mapping) tailored to each vehicle, delivering a better driving experience and optimal performance, while ensuring safety and reliability.

The benefits of engine remapping

Power and torque gains of up to 30%

Performance improvement is the most noticeable benefit. With a Stage 1 remap, we typically achieve an average 30% increase in power, with the torque gain often being even higher in percentage terms than the power increase.

Reduced fuel consumption

Contrary to popular belief, a properly calibrated remap can reduce fuel consumption by up to 10–15% under the same driving conditions. The improvement comes from better-controlled combustion, increased engine thermodynamic efficiency, and the ability for the driver to shift into a higher gear thanks to the earlier availability of torque across the rev range.

Improved driving experience

Driving pleasure is the least measurable benefit, but the one most appreciated by our customers. A remapped engine responds better to throttle input, revs more freely, and offers a wider usable power range. Gear changes are smoother, and acceleration is more responsive.

Reliability and manufacturer tolerances preserved

All our engine maps are developed in strict compliance with the mechanical tolerances defined by manufacturers. This conservative approach is the reason why thousands of vehicles remapped by RS-Tronic have been running reliably for years.

Our Stage-Based Remapping Services

Every driver has different expectations: improved urban driving comfort, track performance, fuel economy, or sports preparation. That is why we offer several levels of intervention, from the most accessible to the most advanced.

Stage 1: Engine Mapping Optimisation

Stage 1 consists of optimising the engine control unit (ECU) map to increase performance while reducing fuel consumption. This service applies to both petrol and diesel engines, with adjustments tailored to each technology (injection management, ignition timing, boost pressure, etc.).

The typical gain from a Stage 1 remap is 20 to 30% more power and torque. It is the ideal choice for drivers looking for a smoother, more enjoyable, and more responsive driving experience, whether with a dynamic petrol engine or a torque-focused, fuel-efficient diesel engine.

Stage 2: Remapping with Performance Parts

Stage 2 remapping goes beyond simple engine map optimisation. This stage involves hardware modifications that unlock even more of the engine’s potential. The components commonly upgraded include:

Exhaust system
Intake system
Air filter
Intercooler

Stage 2 aims to maximise performance by fully exploiting the engine’s capabilities, delivering a more significant increase in power and torque. It is recommended for drivers looking for a substantial improvement in vehicle performance while maintaining a balance between increased power and reliability.

Gearbox Remapping

For vehicles equipped with an automatic gearbox or a dual-clutch transmission (DSG, PDK, S-Tronic, ZF 8HP), we also offer gearbox remapping. This service complements engine remapping by reducing gear shift times, increasing the maximum operating RPM, raising the permitted torque limit, and improving transmission responsiveness in Sport mode. It is the perfect optimisation to fully take advantage of the gains provided by a Stage 1 or Stage 2 remap.

E85 ethanol remapping: drive cheaper and cleaner

With an average price of around €0.75 to €0.80 per litre in 2026, compared with nearly €2 per litre for unleaded petrol, Superethanol-E85 has become the most economical fuel available in France. E85 ethanol conversion for your petrol vehicle is a software-based or hybrid intervention that RS-Tronic carries out on the majority of petrol engines registered since 2001.

A custom engine map

Why choose RS-Tronic to remap your car?

Over 90 centres across France

Our network includes more than 90 centres across France, ensuring you have a local point of contact near you, wherever you live.

A custom engine calibration for every vehicle

Each intervention includes a custom file, developed specifically for your engine serial number, injection system, mileage, and declared usage.

Manufacturer warranty preserved

Our engine maps are developed in compliance with manufacturers’ mechanical tolerances.

Remapping tested on a dynamometer

Our equipped centres have a dynamometer that allows us to objectively measure the actual gains achieved, in horsepower and Newton-metres, before and after the intervention.

Our customers talk about us

"A big thank you for the Stage 1 remap carried out on my Peugeot 208! The result is simply incredible: I can feel a real difference, the car is much more responsive and agile. On top of that, I gained even more horsepower than originally announced, a fantastic surprise!"

Ambre Lebarbu

OWNER OF A PEUGEOT 208

"Great experience with the remapping of my Multivan 2.5 TDI 174 hp. I left with 205 hp and improved fuel consumption! Thank you for the warm welcome, professionalism, and advice. I am delighted with this service, it was definitely worth it!"

Maxime Gousseau

OWNER OF A MULTIVAN

"Stage 1 remap carried out on a 1 Series. A friendly and professional team, providing excellent advice to ensure the proper operation of the vehicle. I am very satisfied with the result. I highly recommend them."

Thomas Crlt

OWNER OF A BMW 1 SERIES

Find a remapping centre near you

RS-Tronic has more than 90 partner centres located throughout France and abroad. Each centre is operated by technicians trained in our procedures and equipped to carry out all the services presented on this page: Stage 1, Stage 2, E85 conversion, or gearbox remapping. Find your nearest centre to book an appointment or request a quote.

Find a centre near you

Frequently Asked Questions about Engine Remapping

Yes, completely. Before any intervention, we systematically save your vehicle’s original engine map on our secure servers. If you wish to return to the factory settings, for example before selling your vehicle, we simply need to reinstall the original file. The restoration to the original configuration is free of charge for a period of 5 years at RS-Tronic centres where the initial remapping was carried out.

The price of an engine remap depends on the make, model, level of intervention, and options selected. As a guideline, a Stage 1 remap generally costs between €390 and €700, while a Stage 2 remap ranges from €800 to €1,500 (excluding parts).

A Stage 1 remap takes an average of 1 to 3 hours on site: ECU reading, original file backup, development or adaptation of the engine map, file installation, and road testing for validation. A Stage 2 remap involving mechanical parts generally requires one to two workshop days.