S68 JB4 Tuner
S68 JB4 Tuner
S68 JB4 Tuner
S68 JB4 Tuner
S68 JB4 Tuner
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S68 JB4 Tuner

£1,168.70
£1,168.70
Sold out
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 serious performance from your 4.4L twin turbo S68 engine with the JB4 plug and play tuning module. Designed for BMW’s latest S68-powered models, this advanced piggyback tune delivers up to 100whp on pump fuel and up to 207whp on higher octane or E85 blends, while retaining stock-like drivability and full factory safety systems. Nforcd supplies this proven upgrade to customers seeking a straightforward, reversible power boost for road or track.

  • Plug and play installation with no cutting or splicing, fully reversible
  • Preloaded S68-specific software with up to 8 selectable maps for different fuels and mods
  • Ethanol compatible maps for E85 mixtures
  • Boost by gear control for 1st, 2nd and 3rd to help manage traction and optimise launches
  • Electronic wastegate control, CANbus OBDII integration and advanced diagnostics
  • Read and clear fault codes directly via the app
  • View and log up to 40 live engine parameters for in depth data analysis
  • Smartphone connectivity via the JB4PRO app on iOS or Android using a Bluetooth 4.0 module
  • Bluetooth adapter fits inside the JB4 enclosure for a tidy, weather protected install
  • Improves 0 to 60 and quarter mile times while keeping factory drive modes intact
  • Fuel economy unchanged during normal driving
  • Not VIN locked, can be removed without a trace and resold
  • Billet aluminium enclosure, made in the USA, 5 year warranty
  • Minimum 91 octane fuel required for performance gains

Nforcd knows the JB4 platform inside out and this S68 tuner has been a popular choice with BMW owners looking for a high quality, aftermarket tuning box that offers real power gains, map switching, data logging and safety features well beyond basic chip tunes.

Vehicle fitment

  • BMW 7 Series G70 M60e 4.4L 2023+
  • BMW 7 Series G70 M760i 4.4L 2024+
  • BMW X6 G06 M60i 4.4L 2024+
  • BMW X5 G05 M60i 4.4L 2024+
  • BMW X7 G07 M60i 4.4L 2023+
  • ALPINA XB7 G07 4.4L 2023+

If you need the correct JB4 for S68 M models, contact Nforcd and our team will advise the right option for your car.

Ready to upgrade your BMW with a leading S68 tuning solution? Order your JB4 from Nforcd today. Professional fitting is available at Nforcd in Warwickshire. To request a fitting quote, email Sales@nforcd.com.