BMW Bluetooth/CANbus Flex Fuel Kits for S58 M2, M3, M4, X3M, & X4M

Take full control of your fuel system with the BMW Bluetooth/CANbus Flex Fuel Kits, designed specifically for S58-equipped BMW models including the G87 M2, G80 M3, G82/G83 M4, F97 X3M, and F98 X4M. Whether you’re running E85 fuel, adding port injection, or seeking precise ethanol monitoring, this kit is an essential upgrade.

Choose from three complete kits:

• CANbus Kit with PnP Harness: For automatic models using JB4, MHD, BM3, or EcuTek.

• CANbus Kit with Universal Harness: For manual models or BM3 flex-fuel setups.

• Bluetooth-Only Kit: Monitor ethanol content wirelessly via the Fuel-It! app (no CANbus integration).

Each kit includes a Genuine Continental® ethanol sensor, braided stainless-steel fuel lines, and custom fittings for easy port injection integration. Real-time ethanol readings are available through:

• LED display

• Fuel-It! App (Bluetooth version)

• JB4 and other flash tuning platforms via standard CANbus 0xEC protocol

Key Features:

• True plug-and-play install in ~30 minutes

• Compatible with JB4, MHD, BM3, and EcuTek

• Monitor ethanol on your smartphone or tablet

• Optional port injection support

• Free shipping within the U.S. on complete kits

Whether you’re daily driving or heading to the track, this Flex Fuel Kit gives you the data and flexibility you need to safely maximize performance.

Vehicle Compatibility:

• 2020+ F97 X3M / F98 X4M

• 2023+ G87 M2 (Universal harness only)

• 2021+ G80 M3 / G82-G83 M4 (Auto & Manual)

• 2023+ G82 M4 CSL (Universal harness only)

Note: Proper functionality requires inclusion of ethanol sensor, fuel lines, and CANflex analyzer. Ethanol readings are estimated based on fuel composition and may be affected by contaminants.