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.

Run E85 with confidence. The BMS CANflex kit gives your B58 equipped G Chassis BMW a clean, accurate way to read ethanol content and send that data directly to your tune.

This complete flex fuel kit, also known as an ethanol sensor kit, E85 sensor, flex fuel sensor, ethanol content sensor, fuel composition sensor, or flex fuel composition sensor, installs in about 30 minutes.

The CANflex ECA works as an ethanol content analyzer, E85 analyzer, and Bluetooth flex fuel analyzer in one compact system. It reads your fuel mixture using a genuine Continental® ethanol sensor and outputs the data through CANbus, Bluetooth, a built-in LED display, and 5v output for legacy support.

Our CANbus ECA is compatible with JB4 as well as flash only applications like MHD, BM3, and EcuTek that read the standard 0xEC flex fuel CANbus address format .

Our new CANflex ECA sends your ethanol mixture four different ways for the ultimate tuning integration:

• CANbus via user selectable addressing for MHD, BM3, EcuTek, and JB4 integration
• Free CANflex Bluetooth app for iOS and Android
• LED display built into the head unit for quick visual readout
• 5v output for legacy support (older ECUs or non-CANbus JB4 integration)

Offered in both a plug and play harness and a universal harness. Manual transmission vehicles and BM3 require using the universal harness with posi-taps for CANbus.

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)
  
• (1) Tube of Super Lube®
• BMW Accessory Harness for 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
• 2020-2023 G30 G31 BMW Gen 2 B58 540i

INSTALL VIDEO

All sales for Burger Motorsports and Fuel-It! products are final. These items are not eligible for return or exchange under any circumstances. Please ensure compatibility and fitment before placing your order.