Fuel-It! FLEX FUEL KIT for S58 BMW X3M & X4M

If you’re running E85 or ethanol mixes in your S58 BMW X3M or X4M, you need this kit!

Know your exact ethanol content in real-time via the Fuel-It! or JB4 app on your smartphone or tablet.

This is a complete plug and play kit to install a Bluetooth ethanol sensor in your X3M or X4M in about 30 minutes.

(Check compatibility for your platform below)

The kit includes the following:

• New 5/16″ E85 compatible fuel lines for your engine bay
• Genuine Continental ethanol sensor
• Fuel-It! Bluetooth analyzer (iPhone or Android app must be purchased to use this kit)
• Plug and play harness

• Includes both Bluetooth App & 5v analog output for JB4 or flash tuning

  • • Bluetooth (iPhone or Android app must be downloaded to use this feature)
    • 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

This kit is compatible with the following

• 2020+ BMW X3M / X3M Competition
• 2020+ BMW X4M / X4M Competition

*For the BMW S58 JB4 platform connect the white wire to position #4 on the JB4 25 pin harness. Select WMI page option 2/3 input to enable.

*We have also made it optional  to purchase all the items ala-cart should you choose but for the kit to work it must include the Fuel Lines, Ethanol Sensor, and Analyzer.

*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

*Ethanol Sensors don’t actually read the ethanol content, the readings are based on the absence of gasoline, so if your fuel is contaminated your ethanol readings may be artificially elevated.

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