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The Control Module works by using MMR's in-house developed calibration running on their standalone PCB, which communicates in parallel with the factory ECU. This communication route allows the PCM to safely optimize 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 fueling controlled by the Control Module computer.
MMR has carried out tens of thousands of development miles of rigorous testing on their in-house dyno, on road and on track with numerous calibrations, across multiple cars and different hardware installations, allowing them to find the sweet spot for engine drivability and safety.
The unit itself is housed in a stunning billet aluminum case, finned to ensure adequate cooling plus a beautiful carbon fiber mounting bracket to affix it securely in your engine bay.
Features:
Fitment:
Notes:
MMR has carried out tens of thousands of development miles of rigorous testing on their in-house dyno, on road and on track with numerous calibrations, across multiple cars and different hardware installations, allowing them to find the sweet spot for engine drivability and safety.
The unit itself is housed in a stunning billet aluminum case, finned to ensure adequate cooling plus a beautiful carbon fiber mounting bracket to affix it securely in your engine bay.
Features:
- Removable and undetectable
- Constructed from Billet Aluminum
- Anodized in signature MMR Gloss black
- Engineered and hand-assembled in the UK
- Calibrated in-house by MMR
- Vehicle-specific loom / wiring harness and carbon fiber mounting bracket
Fitment:
- BMW G8X M3/M4 2021-2025
Notes:
- Not for sale in California; CS / CSL models require specific module coding (not for standard models)
Proposition 65
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| BMW M3 | 2021-2024 | Competition |
| BMW M3 | 2021-2024 | Base |
| BMW M3 | 2022-2024 | Competition xDrive |
| BMW M3 | 2024 | CS |
| BMW M4 | 2021-2025 | Base |
| BMW M4 | 2021-2025 | Competition |
| BMW M4 | 2022-2025 | Competition xDrive |
| BMW M4 | 2023 | Competition Heritage |
| BMW M4 | 2023 | CSL |
| BMW M4 | 2025 | CS |
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