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MMX Performance F8X S55 power control module for M2C, M3, M4 BMW models, shown installed in the engine bay.
  • MMX Performance F8X S55 power control module for M2C, M3, M4 BMW models, shown installed in the engine bay.
  • MMX Performance F8X S55 power control module for BMW M2, M3, M4 enhances engine performance and tuning.
  • MMX Performance F8X S55 Power Control Module installed in BMW M2, M3, M4 with performance tuning features.
  • MMX Performance F8X S55 Power Control Module installed in BMW M2 M3 M4 for enhanced performance and engine tuning.
MMX Performance F8X S55 Power Control Module | M2C, M3, M4

MMX Performance F8X S55 Power Control Module | M2C, M3, M4

1 IN STOCK

SKU: MMR50-1603
$1,013.51

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The MMX Performance F8X S55 Power Control Module is a clean-sheet alternative to traditional ECU tuning for the S55-powered M2 Competition, M3, and M4. After more than 12 months of in-house development, the PCM is far more than a piggyback box, it functions closer to a secondary ECU, with a standalone PCB running MMX's own calibration and communicating in parallel with the factory ECU to optimise charge air pressure, ignition, and fuelling in real time.

The result is a substantial increase in power and torque across the entire powerband, but delivered the way MMX prefers: smoothly, safely, and reliably, without compromising drivability or efficiency. The PCM keeps the OEM ECU intact and untouched, which is what enables the headline benefit: it's completely removable, leaves no trace, and is undetectable when removed. For owners who want serious gains without committing to a flashed ECU, this is the cleanest path on the platform.

Each module is housed in a finned billet aluminium case, anodised in MMX gloss black, and mounted on a carbon fibre bracket. The wiring loom is vehicle-specific, every SKU corresponds to a particular S55 variant, with calibration tuned for that car's stock output. Installation is plug-and-play into the engine bay sensor harness; no ECU removal, no permanent modifications, no special tools required.

Painstakingly engineered and hand-assembled in the UK to OEM-level quality.

Product Details

  • Standalone PCB with MMX in-house calibration
  • Fully removable and undetectable once removed
  • Billet aluminium case, finned for cooling, MMX gloss black anodised
  • Carbon fibre mounting bracket included
  • Vehicle-specific wiring loom: select your variant from the dropdown

What's Included

  • PCM unit (billet aluminium finned case)
  • Vehicle-specific wiring loom
  • Carbon fibre mounting bracket and hardware

Variant Output

  • MMR50-1603: F87 M2 Competition: stock 405 HP / 550 Nm → 494 HP / 625 Nm (+89 HP / +75 Nm)
  • MMR50-1604: F87 M2 Competition Sport: stock 444 HP / 550 Nm → 494 HP / 625 Nm (+50 HP / +75 Nm)
  • MMR50-1605: F80 M3 / F82/F83 M4 Competition: stock 450 HP / 550 Nm → 520 HP / 660 Nm (+70 HP / +110 Nm)
  • MMR50-1606: F80 M3 / F82/F83 M4 (base): stock 431 HP / 550 Nm → 510 HP / 650 Nm (+79 HP / +100 Nm)
  • MMR50-1607: F80 M3 / F82/F83 M4 Competition Sport: stock 460 HP / 600 Nm → 520 HP / 670 Nm (+60 HP / +70 Nm)

Vehicle Applications

Notes

  • F87 M2 (N55 engine) is NOT compatible with this S55 module.
  • Includes a 1-year manufacturer warranty against defects in materials and workmanship
  • Designed and tested in the United Kingdom
  • View emissions compliance notice
  • Not for sale or use in California

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