RaceChip Chiptuning GMBH &Co.KG
MMX Plug‑In Tuning Box Piggyback Power Module for BMW M3 G80/G81 S58 Saloon & Touring including Competition, xDrive, LCI & CS
MMX Plug‑In Tuning Box Piggyback Power Module for BMW M3 G80/G81 S58 Saloon & Touring including Competition, xDrive, LCI & CS
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 S58 performance, no ECU opening required
Unlock serious gains from your G8X platform with this plug-in performance module for the 3.0 S58 twin‑turbo straight‑six. Designed for the latest M3 saloon and Touring, including Competition, xDrive, LCI and CS, this smart piggyback tuner delivers ferocious acceleration, stronger mid‑range punch and sharper response without a full remap or bench unlock. It’s a quick, clean, fully reversible upgrade that keeps your factory control unit sealed and untouched.
- Plug-in tuning box for the S58 engine: fast install, no coding
- Reversible in minutes for servicing or resale
- Remap alternative for owners mindful of warranty on G8X models
- Transforms drivability: harder hit, broader torque band, improved in-gear thrust
- Works seamlessly with all drive modes and both rear-wheel drive and xDrive variants
Proven power and torque on the G8X M3 range
Real‑world, dyno‑verified uplift across the line-up. See expected output figures below:
| Model | Chassis | Stock Power (HP) | Stock Torque (Nm) | With Module (HP) | With Module (Nm) |
|---|---|---|---|---|---|
| M3 | G80 | 480 | 550 | 580 | 650 |
| M3 Competition | G80 | 510 | 650 | 610 | 750 |
| M3 Competition xDrive | G80 | 510 | 650 | 610 | 750 |
| M3 Competition xDrive LCI | G80 | 530 | 650 | 630 | 750 |
| M3 Touring | G81 | 510 | 650 | 610 | 750 |
| M3 Touring LCI | G81 | 530 | 650 | 630 | 750 |
| M3 CS | G80 | 551 | 650 | 660 | 750 |
Why owners choose this S58 tuning solution
- Huge performance per pound compared with traditional ECU flashing
- Ideal for lease and finance vehicles where permanent modification isn’t desired
- Retains OEM refinement and drivability for daily use
- Trusted by MJ Modifications customers — the feedback on the transformation is superb
Professional fitting available
Prefer expert installation? Book your fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote and availability.
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