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
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
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
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  • Load image into Gallery viewer, MMX Plug‑In Tuning Box Piggyback Power Module for BMW M3 G80/G81 S58 Saloon & Touring including Competition, xDrive, LCI & CS
  • Load image into Gallery viewer, MMX Plug‑In Tuning Box Piggyback Power Module for BMW M3 G80/G81 S58 Saloon & Touring including Competition, xDrive, LCI & CS
  • Load image into Gallery viewer, 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

£749.99
£749.99
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Tax included. Shipping calculated at checkout.

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.

Unlock more from your BMW M3 with the MMX Plug-In Tuning Box. This smart piggyback power module is built for the S58 3.0 twin-turbo straight-six in the G80 Saloon and G81 Touring, including Competition, xDrive, LCI and CS. It installs in-line with factory sensors to increase performance without opening the ECU or carrying out a full remap. The result is punchier acceleration, stronger mid-range and crisper throttle response while keeping the factory control unit sealed and the upgrade fully reversible.

  • Plug-in piggyback tuner for the BMW S58 engine, no coding or ECU removal
  • Fast fitment and fully reversible for servicing or resale
  • Remap alternative for owners who want a non-permanent upgrade
  • Works with all BMW drive modes on rear-wheel drive and xDrive models
  • Enhances in-gear pull and drivability across the G8X M3 range

Expected output figures on G8X M3 models

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 choose this S58 upgrade from Nforcd

  • Ideal for lease or finance cars where a permanent modification is not desired
  • Keeps the OEM ECU sealed with no bench unlock required
  • OEM-like refinement for daily use with a noticeable uplift in response
  • Supported by Nforcd product knowledge and aftersales, a popular choice with our customers

Ready to get more from your G80 or G81 M3 with a simple, plug and play tuning solution? Order your MMX Plug-In Tuning Box from Nforcd today. Professional fitting is available at Nforcd in Warwickshire. To request a tailored quote and availability, email Sales@nforcd.com.

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