Flex Fuel Kit for BMW N20/N26

The Burger Motorsports Flex Fuel Kit provides critical real-time ethanol content monitoring for turbocharged BMW vehicles utilizing N20 and N26 engines. This essential component addresses the variability of E85 pump fuel, which can range from E50 to E85 or higher depending on seasonal blends and station availability. By eliminating the need for manual calculations at the pump, this kit allows users to simply open the associated app and know their exact fuel composition. The kit also offers a 0–5V analog output, facilitating integration with JB4 or flash tuning systems. Its plug-and-play design utilizes ethanol-safe PTFE fuel lines and fittings, ensuring durability and compatibility. Installation is streamlined, requiring approximately 30 minutes and no cutting or permanent modifications to the vehicle. Running E85 without accurate ethanol content data can lead to suboptimal engine tuning and potential damage. This kit enables users to confidently dial in their exact E85 blend at every fill-up, preventing the risk of running too much ethanol on a pump gas map. It also allows for the safe maximization of timing and boost on dedicated ethanol maps, ensuring consistent performance at the track and protecting the engine from unknown fuel mixtures. The bottom line is that for any enthusiast running E85, a flex fuel sensor is not optional but essential for power, consistency, and engine safety. This kit is compatible exclusively with BMW N20 and N26 engines. A specific notice applies to N26 motors: the HPFP supply line must be retrofitted with BMW part 13537585415 for compatibility. The kit is designed for various F-chassis models including the 2012-2016 BMW 1 Series (125i), 2014-2016 BMW 2 Series Coupe and Convertible (220i, 228i, including xDrive), 2012-2016 BMW 3 Series Sedan and Touring (320i, 328i, including xDrive), 2013-2016 BMW 3 Series Gran Turismo (320i, 328i, including xDrive), 2012-2016 BMW 3 Series Long-Wheelbase Sedan (320Li and 328Li), 2014-2016 BMW 4 Series Coupe and Convertible (420i, 428i, including xDrive), and 2015-2016 BMW 4 Series Gran Coupe (420i, 428i, including xDrive). It is crucial to verify that the vehicle is equipped with an N20 or N26 engine before ordering, as trim, engine, and drivetrain availability can vary by country. For integration with the BMW F-series JB4 platform, the white wire connects to position #14 on the JB4 25-pin harness, and the WMI Ethanol Setup option 1 must be selected to enable the flex fuel input.