{"product_id":"mmx-performance-s55-power-control-module-bmw-m2-competition-cs-m3-m4-f8x-2015-2020","title":"MMX Performance S55 Power Control Module - BMW M2 Competition \u0026 CS \/ M3 \/ M4 (F8x) 2015-2020","description":"\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eEach 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.\u003c\/p\u003e\n\u003cp\u003ePainstakingly engineered and hand-assembled in the UK to OEM-level quality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStandalone PCB with MMX in-house calibration\u003c\/li\u003e\n\u003cli\u003eFully removable and undetectable once removed\u003c\/li\u003e\n\u003cli\u003eBillet aluminum case, finned for cooling, MMX gloss black anodized\u003c\/li\u003e\n\u003cli\u003eCarbon fiber mounting bracket included\u003c\/li\u003e\n\u003cli\u003eVehicle-specific wiring loom: select your variant from the dropdown\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePCM unit (billet aluminum finned case)\u003c\/li\u003e\n\u003cli\u003eVehicle-specific wiring loom\u003c\/li\u003e\n\u003cli\u003eCarbon fiber mounting bracket and hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVariant Output\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMMR50-1603: F87 M2 Competition: stock 405 HP \/ 550 Nm → 494 HP \/ 625 Nm (+89 HP \/ +75 Nm)\u003c\/li\u003e\n\u003cli\u003eMMR50-1604: F87 M2 Competition Sport: stock 444 HP \/ 550 Nm → 494 HP \/ 625 Nm (+50 HP \/ +75 Nm)\u003c\/li\u003e\n\u003cli\u003eMMR50-1605: F80 M3 \/ F82\/F83 M4 Competition: stock 450 HP \/ 550 Nm → 520 HP \/ 660 Nm (+70 HP \/ +110 Nm)\u003c\/li\u003e\n\u003cli\u003eMMR50-1606: F80 M3 \/ F82\/F83 M4 (base): stock 431 HP \/ 550 Nm → 510 HP \/ 650 Nm (+79 HP \/ +100 Nm)\u003c\/li\u003e\n\u003cli\u003eMMR50-1607: F80 M3 \/ F82\/F83 M4 Competition Sport: stock 460 HP \/ 600 Nm → 520 HP \/ 670 Nm (+60 HP \/ +70 Nm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBMW M2 Competition (F87) 2019-2021\u003c\/li\u003e\n\u003cli\u003eBMW M2 CS (F87) 2020\u003c\/li\u003e\n\u003cli\u003eBMW M3 (F80) 2015-2018\u003c\/li\u003e\n\u003cli\u003eBMW M4 (F82 \/ F83) 2015-2020\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eF87 M2 (N55 engine) is NOT compatible with this S55 module.\u003c\/li\u003e\n\u003cli\u003eIncludes a 1-year manufacturer warranty against defects in materials and workmanship\u003c\/li\u003e\n\u003cli\u003eDesigned and tested in the United Kingdom\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNot for sale or use in California\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MMX Performance","offers":[{"title":"F87 M2 Competition","offer_id":59587044802846,"sku":"MMR50-1603","price":1013.51,"currency_code":"USD","in_stock":true},{"title":"F87 M2 CS","offer_id":59587044835614,"sku":"MMR50-1604","price":1013.51,"currency_code":"USD","in_stock":true},{"title":"F8X M3 \/ M4","offer_id":59587044868382,"sku":"MMR50-1606","price":1013.51,"currency_code":"USD","in_stock":true},{"title":"F8X M3 \/ M4 Competition","offer_id":59587044901150,"sku":"MMR50-1605","price":1013.51,"currency_code":"USD","in_stock":true},{"title":"F80 M3 CS \/ F82 M4 CS","offer_id":59587044933918,"sku":"MMR50-1607","price":1013.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2076\/8493\/files\/54149160030_29ee8b2524_b.jpg?v=1783611109","url":"https:\/\/pattersonperformanceparts.com\/products\/mmx-performance-s55-power-control-module-bmw-m2-competition-cs-m3-m4-f8x-2015-2020","provider":"Patterson Performance Parts","version":"1.0","type":"link"}