MMX Performance Power Control Module (PCM) – G8X M2 / M3 / M4

The MMX Performance PCM is more than a “tuning box”—it’s effectively a secondary ECU, engineered to safely optimize your engine’s performance in real time. Using our in-house developed calibration running on a standalone PCB, the PCM communicates in parallel with the factory ECU to intelligently manage multiple sensor signals, including charge air pressure, ignition, and fueling. The result: substantial increases in power and torque across the entire powerband.

Extensive development—tens of thousands of miles on our dyno, on-road, and track—ensures optimal performance, drivability, and safety across different hardware setups.

The kit includes a vehicle-specific wiring loom and a secure carbon fiber mounting bracket. The PCM itself is housed in a billet aluminum case with cooling fins, finished in MMX gloss black anodizing for both durability and aesthetics.

NOTE: CS / CSL models require specific module coding and this unit is not compatible with standard models.

Product Features

• Power Gains:

  • G87 M2: +100 HP / +100 Nm

  • G8X M3 / M4: +100 HP / +100 Nm

  • G8X CS / CSL: +110 HP / +100 Nm

• Significant increase in torque and power across the powerband

• Simple installation with included instructions

• Removable and undetectable

• Billet aluminum construction with cooling fins

• Signature MMX gloss black anodized finish

• Engineered, hand-assembled, and calibrated in-house in the UK

• Vehicle-specific loom and carbon fiber mounting bracket included