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MMX Performance S55 Power Control Module - BMW M2 Competition & CS / M3 / M4 (F8x) 2015-2020
Lease for as low as $/week
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 optimize charge air pressure, ignition, and fueling 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 aluminum case, anodized in MMX gloss black, and mounted on a carbon fiber 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 aluminum case, finned for cooling, MMX gloss black anodized
- Carbon fiber mounting bracket included
- Vehicle-specific wiring loom: select your variant from the dropdown
What's Included
- PCM unit (billet aluminum finned case)
- Vehicle-specific wiring loom
- Carbon fiber 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
- BMW M2 Competition (F87) 2019-2021
- BMW M2 CS (F87) 2020
- BMW M3 (F80) 2015-2018
- BMW M4 (F82 / F83) 2015-2020
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
- Not for sale or use in California
Returns may be accepted within 14 days of purchase pending Return Merchandise Authorization (RMA). No returns or cancellations on special order items. All returns will be charged a 20% restocking fee, no exceptions.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. Item must be able to be resold as new.
Several types of goods are exempt from being returned. Hazardous materials, fluids, greases, chemicals, and clothing are not able to return.
Free shipping is available within the lower 48 states for most orders totaling $199 or more. A free shipping option will be available during checkout. This offer is for delivery address in the continental United States and excludes shipments going to Alaska, Hawaii, Military Boxes, and items that require freight shipping.
Processing Time
Patterson Performance stocks a large quantity of items at any given time. Some items may require drop shipping from one of our various distributors. In stock items will ship within 1-2 business days. If you're needing your product quickly, please contact us to verify product availability before placing your order. Orders requiring additional verification (security concerns, incorrect information, etc.) may need additional processing time. Estimated shipping dates are not guaranteed and are subject to change based on inventory levels and manufacturer lead times. Backordered items are shipped immediately once available.
Items ship daily, If the item you ordered is not in stock, a member of our team will contact you via email / phone.
Patterson Performance will only ship to an address that varies from your billing address if payment is made via Paypal or a financing partner.
Patterson Performance ships from multiple warehouses throughout the United States, and sometimes from manufacturers overseas.
You can simply contact us via email / telephone for a live inventory check
Find more information at www.P65Warnings.ca.gov.