MMX BMW G80/G81 M3 & G82/G83 M4 S58 Engine Power Control Module
Description
Unlock the full potential of your BMW G80/G81 M3 or G82/G83 M4 with the MMX Power Control Module (PCM) – a plug-and-play performance upgrade that delivers huge gains in power and torque while remaining removable and undetectable.
Developed as a smarter alternative to ECU tuning, the PCM works in parallel with the factory ECU, using MMX’s in-house developed calibration on a standalone PCB. By safely optimising multiple sensor signals – including charge air pressure, fuelling, and ignition – the PCM delivers seamless, reliable gains across the entire powerband.
After 12 months of development and tens of thousands of dyno, road, and track miles, the PCM has been fine-tuned to achieve the perfect balance of performance, drivability, and engine safety. Unlike basic tuning boxes, it acts much closer to a secondary ECU, offering precision control and OE-level integration.
Each unit is housed in a billet aluminium case, anodised in MMX’s signature gloss black for durability, with finned cooling for reliability under load. A carbon fibre mounting bracket and vehicle-specific loom ensure a perfect fit and simple installation.
Key Features:
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Plug-and-play Power Control Module for G8X S58 engines
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Gains of up to:
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Standard M3: 550 hp & 650 Nm
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Competition, LCI & CS/CSL models: 650 hp & 750 Nm
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Acts as a secondary ECU, not a simple tuning box
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Optimises multiple channels in real time (ignition, fuelling, boost)
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Removable and undetectable – warranty friendly
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Developed with extensive dyno, road & track testing
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CNC-machined billet aluminium housing, anodised gloss black
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Carbon fibre mounting bracket for secure installation
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Includes vehicle-specific wiring loom for OE-quality fit
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Engineered and hand-assembled in the UK
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Calibrated in-house by MMX for performance and reliability
Compatibility:
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BMW G80 M3 Saloon (2021+)
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BMW G81 M3 Touring (2023+)
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BMW G82 M4 Coupe (2021+)
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BMW G83 M4 Convertible (2021+)
Unlock a new level of performance with the MMX PCM for BMW G80/G81 M3 & G82/G83 M4 – the smart, safe, and powerful plug-and-play solution for your S58 engine.
Will it fit my car?
We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.
Shipping
All orders made through MOD Central will be passed immediately to the supplier (R44 Performance) that has ships the item. You will get an email from them on the point of sale about processing and dispatch time.
Shipping Costs:
The cost of shipping will be calculated at checkout based on the destination, weight of the product and which vendor/vendors you are buying from.
Shipping Providers:
All our vendors work with trusted shipping partners to ensure your products are delivered safely. However, we are not responsible for any shipping delays, damages, or losses.
International Shipping:
Many of our vendors offer international shipping, but please be aware that additional customs fees or import taxes may apply. These charges are the responsibility of the buyer.
Tracking Information:
Once your order has been dispatched, you will receive a confirmation email with tracking details from the vendor your product was purchased from. If you have not received your tracking information, please contact the vendor with your order number.
Returns/Warranty
Eligibility:
All return eligibility will be specific to the vendor.
Return & Refund Process:
To initiate a return, please contact the vendor you purchased the product from with your order number and reason for return. Their team will provide further instructions.