MMX Power Control Module PCM Plug-In Tuning Box, Piggyback ECU for BMW M2 Competition F87 S55

Unlock serious performance in your M2 Competition F87 with the MMX PCM, a plug-in tuning box that delivers a dramatic uplift in bhp and torque without opening the factory ECU. If you want extra pace and sharper response without a traditional remap, this external control unit is the ideal upgrade.

Engineered for the F87 platform, this compact piggyback module integrates seamlessly, transforming real-world acceleration and mid‑range pull while keeping everything fully reversible. Remove it in minutes before a dealer visit and refit just as quickly. No coding required, no permanent changes, just addictive power and response every time you press the throttle.

• Instant performance gain on the M2 Competition F87
• Plug‑in installation and easy to remove when needed
• Discreet solution that leaves the original ECU unopened
• A brilliant alternative to a flash tune or remap
• Trusted by our team and loved by customers for its punch and drivability

We have fitted these units for owners across the UK and the feedback is consistently excellent. Drivers report stronger in-gear acceleration, a livelier throttle, and that addictive surge the S55 should have had from the factory.

Professional fitting available: MJ Modifications in Warwickshire can install this performance upgrade for you. Request a quote at info@mjmodifications.co.uk.

Who is this for

Perfect for enthusiasts who want a serious power increase on the M2 Competition without flashing the ECU, keeping the option to revert to stock at any time. Ideal for road use and track days where you want more punch with minimal hassle.

Why choose this solution

• Reversible tuning box for the F87 chassis
• Keeps factory software intact while boosting output
• Seamless integration for confident daily driving

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Have questions or want us to handle the install in Warwickshire? Email info@mjmodifications.co.uk and our team will be happy to help.