RaceChip Chiptuning GMBH &Co.KG
MMX Plug-In Tuning Box Piggyback Power Module for BMW M3/M4 S58 (G80 G81 G82 G83 G8X) Remap Alternative
MMX Plug-In Tuning Box Piggyback Power Module for BMW M3/M4 S58 (G80 G81 G82 G83 G8X) Remap Alternative
Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.
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Instant bhp and torque for BMW M3 and M4 S58 owners
Unlock serious performance from your S58-powered BMW with this high-quality plug-in tuning box. Designed for the latest G-series M cars, it delivers big gains in bhp and Nm without opening the ECU or flashing software. Fully reversible and ideal for those who want a noticeable step up in acceleration, mid-range punch and throttle response while keeping factory drivability intact.
Perfect for drivers who want more power on the road or track without an invasive ECU bench unlock. We have fitted and run this module on customer cars and the feedback has been outstanding. Strong, repeatable performance, OEM-like refinement and proper shove where it matters.
Why choose this plug-in upgrade
- Real-world performance increase for the 3.0 twin-turbo S58 straight-six
- No coding and no ECU removal required
- Reversible install using an engine-specific plug-in harness
- Keeps factory drive modes and everyday refinement
- Ideal for cars under manufacturer warranty or on lease
- Works with rear-wheel drive and xDrive models
Power and torque gains by model
Figures are approximate and will vary with fuel quality, conditions and supporting hardware.
- M4 G82: 480 bhp stock to 580 bhp, 550 Nm to 650 Nm
- M4 Competition G82: 510 bhp stock to 610 bhp, 650 Nm to 750 Nm
- M4 Competition xDrive G82: 510 bhp stock to 610 bhp, 650 Nm to 750 Nm
- M4 Competition xDrive LCI G82: 530 bhp stock to 630 bhp, 650 Nm to 750 Nm
- M4 CSL G82: 551 bhp stock to 660 bhp, 650 Nm to 750 Nm
- M4 CS G82: 551 bhp stock to 660 bhp, 650 Nm to 750 Nm
Compatibility
- BMW M3 and M4 with the S58 engine
- G80 M3 Saloon, G81 M3 Touring, G82 M4 Coupé, G83 M4 Convertible
- Competition, xDrive, LCI, CS and CSL variants supported
Fitting and support
Professional installation is available at MJ Modifications in Warwickshire. For a fitting quote or to book in, email info@mjmodifications.co.uk.
Why buy from MJ Modifications
- Trusted BMW performance specialists
- Tried and tested on customer cars with excellent results
- Enthusiast advice and aftersales support
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