Fuel-It! Electronics for BMW Z Series G29 (2019+)

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BMW fuel system electronics are crucial for the precise operation of your vehicleaEURtms fuel delivery system, optimizing fuel efficiency, and ensuring engine performance. These sophisticated components control essential functions such as fuel injection, fuel pump operation, and sensor data to manage fuel flow, maintain the correct air-fuel mixture, and improve emission control. BMW vehicles may also be equipped with flex fuel systems that adjust the air-fuel ratio depending on the type of fuel being used, allowing for better adaptability to E85 or other ethanol blends. Additionally, fuel pump control modules play a key role in regulating fuel pressure and ensuring the pump operates at optimal levels. Common issues with fuel system electronics include malfunctioning sensors, failing fuel injectors, and damaged fuel pumps or fuel pump control modules, leading to poor fuel economy, engine misfires, or stalling. Solutions to these problems include replacing faulty sensors, upgrading to high-quality fuel injectors, and ensuring the fuel pump control module is functioning correctly. By investing in premium components and performing regular maintenance, these issues can be minimized, extending the lifespan of the fuel system while ensuring peak performance.
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Fuel-It! Flex Fuel Kit - B58 G29 Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fuel-It! - Corporate Logo
T#:21275568
Part#: FFK-G29Z4-CK
Ships on Jun 22, 2026
$ 479.99 USD
Free Shipping on orders $49 and up
If you are running E85 or ethanol mixes in your BMW, you need this kit! This is a complete plug and play kit to install a Bluetooth ethanol sensor in your B58 powered G29 Z4. This kit replaces the stock fuel lines from the fuel tank to the engine bay with an upgraded -6an E85 compatible fuel line and adds an ethanol sensor and Bluetooth analyzer to monitor your ethanol content. Includes both Bluetooth App & 5v analog output for JB4 or flash tuning. All of these kits utilize the BMS custom billet aluminum fittings to integrate with the stock fittings so no modifications are needed. For the G29 Z4 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. *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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