Integrate ethanol mixture into your tuning using our unique CANflex system!
If you're running E85 and/or plan to run port injection in your S58, you need this kit!
This is a complete plug & play kit to install a flex fuel kit in your S58 equipped BMW in about 30 minutes.
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.
Vehicle Fitment
- 2020+ F97 X3M and all variants
- 2020+ F98 X4M and all variants
- 2023+ S58 G87 M2
- 2021+ S58 G80 M3
- 2021+ S58 G82 / G83 M4
- 2023+ S58 G82 M4 CSL
The complete S58 kit with CANflex includes:
- Genuine Continental® ethanol sensor
- BMS CANflex LED ECA for use with JB4, MHD, EcuTek, and BM3
- Stainless steel braided fuel lines with black nylon sheathing to protect engine bay components
- Custom fitting allowing easy addition of optional port injection lines via 1/8" NPT port
- Plug & play harness (optional)
- BMW/Supra Accessory Harness for S58/B58 motors
Download the free BMS CANflex apps:
- Android App – Click here
- Apple (iOS) App – Click 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 into JB4
Also available with the original Fuel-It! ECA (Bluetooth and legacy 5v output only)
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Download the Fuel-It! Bluetooth App:
- Apple (iOS) – Click here
- Android – Click here
Install Videos
CANflex variants and how to use the new app!
BMS Universal Canbus E85 Analyzer Installation and Review