£500.00£650.00 exc.VAT

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The heart of the BMW M4 Coupé is the BMW M TwinPower Turbo inline 6-cylinder petrol engine. With its tremendous power and unmistakeable sound. Interplay between optimally tuned motorsport technologies permit a thrust of 317 kW (431 hp).


With our unique ECU calibration, the full potential of this engine is unleashed. With horsepower gains up to +100-120hp and more than 170NM of torque, the driving experience goes to another level.


Two different stages of ECU calibration with unique specs and performance depending on the modifications that your car has.


Stg1 :

  • ECU calibration for setups that are completely stock or are supplied with an intake system.
  • Estimated horsepower 500-510HP & 670-680NM.

Stg2 :

  • ECU calibration for setups that are supplied with at an intake system and a full exhaust system.
  • Estimates horsepower 540-550HP & 720-730NM.



  • RTMG is informing that there are big differences in the factory specifications due to the installation of the performance software upgrade. Moreover, these upgrades may cause unexpected problems to the car and RTMG is taking no liability and is not responsible for them.
  • The owner affirms that is completely aware and accepts all the above and especially that the performance software upgrade is not corresponding to the factory car capabilities based on the factory specifications and may cause unexpected problems to mechanical parts of the car.
  • The owner affirms that takes full liability of any unexpected problems or damages caused in the car after the installation of the performance software at the current or future date and will not claim against RTMG who installed the performance upgrades.


Additional information


Stage 1, Stage 2, Stage 3


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