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

If you're running E85, you need this kit!

This is a complete plug & play kit to install a flex fuel kit in your S63 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 that read the standard 0xEC flex fuel CANbus address format .

We now offer 2 types of kits:

1. 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.
2. 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
• Billet custom fittings
• Stainless steel braided fuel lines with black nylon sheathing to protect your other engine bay components
  

   

  CANflex ECA's support all the popular CANbus addresses (0xec, 0x4cb, etc), including custom addressing.

  Download the free BMS CANflex apps here:

  • If you are using an Android product the app can be found by clicking here!
    
  • If you are using an Apple product the app can be found by clicking here!

   

  *****Wiring diagram for the new BMS Bluetooth CANflex Harness*****

  Red: (originally Red/Green): 12v switched power via fuse tap or posi-tap

  Black:  Chassis ground

  Brown: (originally Orange): CAN- 

  Green: (originally Red/Blue): CAN+ 

  Blue: 5V legacy output for input for input into JB4

  
  

  

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

• Genuine Continental® ethanol sensor
  
• Billet custom fittings
• 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)
  
  • Includes both Bluetooth App & 5v analog output for JB4 or flash tuning
    

• Download the free Fuel-It! Bluetooth Apps here:

  • If you are using an Apple product the app can be found by clicking here!
  • If you are using an Android product the app can be found by clicking here!

  

Replacement fuel lines are also available ala cart.

This kit is compatible with the following:

BMW M5
•2012-2016 F10 M5

•2017-2023 F90 M5

BMW M6
• 2012-2019 F12/F13/F06 M6

BMW M8
• 2019+ F91/F92/F93 M8

BMW X5M
• 2019+ F95 X5M

• 2015-2018 F85 X5M

BMW X6M

• 2015-2019 F86 X6M

• 2020+ G06 X6M

*For the BMW F and G-series JB4 platform connect the white wire to position #4 on the JB4 25 pin harness. Select WMI Ethanol Setup option 0 to enable pin location 2/3/4 flex fuel input.

*If you aren't sure whether this kit fits your car, send us a picture of your engine bay with the engine cover removed to info@fuel-it.com

*Free shipping in USA on complete kits only.

INSTALL VIDEOS