MMX Performance Power Control Module for BMW M3 / M4 (G80 / G81 / G82 / G83) 2021+ | 110HP Gain

Unlock unparalleled power, effortlessly.

BMW G80/G81 M3 & G82/G83 M4 2021+
+110 HP & +140 NM

PCM works by using our in-house developed calibration running on our standalone PCB, which communicates in parallel with the factory ECU. This communication route allows the PCM to safely optimise a variety of electronic sensor signals in real time, interfacing between the engine controls and its sensors.

With multiple channels such as charge air pressure, ignition and fuelling controlled by the PCM computer, the result is increased power and torque across the whole powerband of the engine.

We have carried tens of thousands of development miles of rigorous testing on our in-house dyno, on road and on track with numerous calibrations, across multiple cars and different hardware installations, allowing us to find the sweet spot for engine performance, drivability and safety.

With 12 months of detailed development, our PCM is so much more than a 'tuning box', and is in fact closer to a secondary ECU. The kit is complete, including a perfect fit wiring loom made especially for the selected vehicle.

• Significant increase in power and torque.
• Simple installation.
• Removable and undetectable.
• Constructed from Billet Aluminium.
• Anodised in signature MMR Gloss black.
• Engineered and hand-assembled in the UK.
• Calibrated in-house by MMX.
• Vehicle-specific loom and bracket.

We're completely honest about this, the PCM calibration is not quite as sophisticated as a full ECU calibration. To keep the car smooth, safe and reliable, PCM's power levels have to be kept slightly lower than traditional ECU calibrations. But of course, you'll love the power boost you get from PCM, combined with the drivability and efficiency gains.