MMX PCM For F8X BMW M3/M4 Competition (S55)

Unlock more power and torque with just one click! 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.

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 electronic sensor signals in real time, interfacing between the engine controls and its sensors.

With multiple channels 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.

The unit itself is housed in a stunning billet aluminium case, finned to ensure adequate cooling plus a beautiful carbon fibre mounting bracket to affix it securely in your engine bay.

Fitment: F8X BMW M3/M4 Competition (S55)

Power Gains:

• Stock figures: 450 HP & 550 Nm
• PCM figures: 520 HP & 660 Nm
• +70 HP +110 Nm

Features:

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