BMW M240i, M340i, M440i, & M540i Bluetooth/CANflex Flex Fuel Kits for the G Chassis Gen 2 B58

Know your exact ethanol content in real-time with our new LED display or by using the free BMS CANflex app on your smartphone or tablet.

If you're running E85 or ethanol mixes in your B58 you need this kit!

This is a complete plug & play kit to install a flex fuel kit in your G-chassis B58 equipped BMW in about 30 minutes. (Check compatibility for your platform below)

Our CANbus ECA is compatible with JB4 as well as flash only applications like MHD, BM3, and EcuTek!

The complete kit with the BMS CANbus ECA includes:

• Genuine Continental® ethanol sensor
  
• BMS CANflex LED ECA for use with JB4, MHD, & BM3
• Stainless steel braided fuel lines with black nylon sheathing to protect your other engine bay components
• Our new custom fitting now makes adding port injection easier than ever. Simply remove the 1/8" NPT fitting and add one of our optional port injection lines.
  
• Includes our 10bar low fuel pressure sensor critical for B58 tuning! 
• Plug and play harness (optional)
• BMW/Supra Accessory Harness for S58/B58 motors

Download the free BMS CANflex app here:

 Vehicle Fitment

• 2022+ G42 BMW Gen 2 B58 M240i
• 2019-2024 G20 G21 BMW Gen 2 B58 M340i
• 2021-2024 G22 G23 G26 BMW Gen 2 B58 M440i
• 2017+ G30 BMW Gen 2 B58 540i

INSTALL VIDEOS