Description
If you’re running E85 or ethanol blends in your BMW Z4, the Fuel-It! Bluetooth Flex Fuel Kit is a must-have upgrade. This complete plug-and-play system allows you to monitor your exact ethanol content in real time using an LED display, BMS CANflex, Fuel-It! app, or JB4 mobile app on your smartphone or tablet.
Designed specifically for the 2020+ BMW Z4 G29 chassis, this kit installs a Bluetooth ethanol sensor in approximately 30 minutes with no permanent modifications required. Accurate ethanol content data ensures safer tuning, improved consistency, and optimized performance when running ethanol-based fuels.
The CANbus ECA option is compatible with JB4 as well as flash-only tuning platforms such as MHD, BM3, and EcuTek that read the standard 0xEC flex fuel CANbus address format. Multiple kit configurations are available to support different transmissions, tuning platforms, and user preferences.
Available Kit Options
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Complete Kit with CANbus ECA and Plug-and-Play Harness
Includes a plug-and-play harness compatible with stock ECU flashes, JB4, EcuTek, and MHD. Manual transmission vehicles or cars running a BM3 tune must use the universal harness. -
Complete Kit with CANbus ECA and Universal Harness
Includes a universal harness compatible with all applications, including manual transmission vehicles and BM3 flex fuel tunes. -
Complete Kit with Fuel-It! Bluetooth ECA
Includes a Bluetooth ECA for use with JB4 and the Fuel-It! app. This option does not include CANbus integration.
CANbus ECA Complete Kit Includes
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Genuine Continental ethanol sensor
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BMS CANflex LED ECA for use with JB4, MHD, and BM3
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Two stainless steel braided fuel lines with black nylon sheathing
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LPFP pressure sensor
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Plug-and-play harness (optional)
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BMW / Supra accessory harness for S58 and B58 engines
Fuel-It! Bluetooth ECA Complete Kit Includes
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Genuine Continental ethanol sensor
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Two stainless steel braided fuel lines with black nylon sheathing
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Fuel-It! Bluetooth analyzer
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Plug-and-play harness
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Bluetooth app support and 5V analog output for JB4 or flash tuning
Additional Information
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Bluetooth functionality requires a compatible smartphone or tablet
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Replacement fuel lines are available separately
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Components may be purchased individually, but the system must include fuel lines, an ethanol sensor, and an analyzer to function
JB4 Wiring Information
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Supra JB4 platform
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Connect the white wire to position #4 on the JB4 25-pin harness
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Select the WMI setup page and enable bit 0
Vehicle Fitment
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2020+ BMW Z4 G29 B48 30i
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2020+ BMW Z4 G29 B58 M40i
Harness Requirements
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Manual transmission vehicles or BM3 tuning require the universal harness
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All other configurations may use the plug-and-play harness
This plug-and-play flex fuel solution delivers precise real-time ethanol monitoring and broad tuning compatibility, making it the ideal upgrade for any BMW Z4 G29 B48 or B58 build running E85 or ethanol blends.
