Know your exact ethanol content in real-time with our new LED display or by using the BMS CANflex, Fuel-It! or JB4 app on your smartphone or tablet.

If you're running E85 or ethanol mixes in your BMW Z4, you need this kit!

This is a complete plug & play kit to install a Bluetooth ethanol sensor in your 2020+ G29 BMW Z4 in about 30 minutes.

Run E85 with confidence. The BMS CANflex kit gives your B48 or B58 equipped BMW Z4 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 .

We now offer 3 types of kits:

1. Complete Kit with CANbus ECA and PnP Harness = Includes a plug and play harness compatible with stock ECU flashes, JB4, ECUteck, and MHD. *If you have a manual transmission or a BM3 tune, you must purchase the universal harness.
2. Complete Kit with CANbus ECA and Universal Harness = Includes universal harness that works for all applications including manual cars and those running a BM3 flex fuel tune.
3. Complete Kit with Fuel-It! Bluetooth ECA = Includes a bluetooth ECA for use with JB4 and the Fuel-It! app. *Does not include CANbus integration

The complete kit with the BMS CANbus ECA includes the following:

• Genuine Continental® ethanol sensor
  
• BMS CANflex LED ECA for use with JB4, MHD, & BM3
• Two stainless steel braided fuel lines with black nylon sheathing to protect your other engine bay components
• LPFP pressure sensor
• Plug and play harness (optional)
• BMW/Supra Accessory Harness for S58/B58 motors

Download the free BMS CANflex app here:

The complete kit with Fuel-It! Bluetooth ECA includes the following:

• Genuine Continental® ethanol sensor
  
• Two stainless steel braided fuel lines with black nylon sheathing to protect your other engine bay components
• Fuel-It! Bluetooth analyzer (iPhone or Android app must be downloaded to use this kit)
• Plug and play harness
• Includes both Bluetooth App & 5v analog output for JB4 or flash tuning

Download the Fuel-It! ECA app here:

Vehicle Fitment

• 2020+ G29 BMW Z4 B48 30i and B58 M40i

*Manual transmission or BM3 require universal harness. All others
use the PNP harness.

*For the Z4 JB4 platform connect the white wire to position #4 on the JB4 25 pin harness. Select the WMI setup page and enable bit 0.

INSTALL VIDEOS

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.