Ready to unleash serious performance from your S58? Nforcd’s 700hp Package for the BMW G8X platform combines proven JB4 tuning, a Bluetooth/CANbus flex fuel kit and your choice of BMS S58 performance intake to deliver a powerful, simple bolt-on upgrade for locked ECU cars. It’s plug-and-play, requires no permanent modifications and gives you wireless control via the JB4PRO app.
- Engineered for S58-powered BMW G87 M2 2023+, G80 M3 2021 to 2026 including Competition, G82 M4 2021+, G82 M4 Competition, G82 M4 CSL 2023+ and G83 M4 Convertible 2022+
- JB4 tuner provides safe, proven tuning on locked ECU vehicles with on-the-fly map changes and data logging via the included JB4PRO Bluetooth adapter and app
- Bluetooth/CANbus flex fuel kit displays live ethanol content to help maintain consistent performance
- Choose your airflow upgrade: BMS S58 Performance Intake, Front Mount Performance Intake or Front Mount Silicone Intake system
- True plug-and-play installation with no permanent vehicle changes
- Package extras include an official JB4 car emblem, licence plate frame, logo sticker sheet and a magnetic phone mount
What’s included
- S58 JB4 Tuner for G87 M2, G80 M3 and G82/G83 M4
- High-flow Bluetooth/CANbus Flex Fuel Kit for S58 (ethanol content monitoring)
- One BMS S58 intake of your choice:
- BMS G8X S58 Performance Intake
- BMS G8X S58 Front Mount Performance Intake
- BMS S58 Front Mount Silicone Intake
- JB4 accessories: car emblem, licence plate frame, logo sticker sheet and magnetic phone mount
This complete aftermarket tuning package targets 700hp potential by pairing the renowned JB4 tuning box with improved intake airflow and real-time ethanol blend visibility. It’s a popular route for G8X owners wanting a high-performance, easily reversible upgrade with wireless control and data logging built in.
Order with confidence from Nforcd, your trusted UK supplier of performance car parts. Professional fitting is available at our Warwickshire workshop. To request a fitting quote or get expert advice on intake selection and setup, email Sales@nforcd.com.

