Flex Fuel Kits CRUZE - Malibu - Terrain - Equinox - Vanderhall - Sonic - Trax  Note: These are not DIY kits. Each kit comes with a custom pre made wire harness made specifically for each vehicle. Each kit comes with fuel systems adapters, fuel system disconnect tool, ECM pin blank removal tool. The wire harness is set up for your ECM to simply plug right in after you use the pin blank removal tool.  I am one of the first people to figure out flex fuel on the Gen 2 CRUZE. Since then I have worked on flex fuel kits that will fit the Equinox and the Malibu. Let me know what vehicle you have and I will build the kit accordingly. The loom colors may change. I can also do custom colors if requested and I can get the colors.  I simplified the ordering for flex fuel kits. You tell me the car you have, what version you want and if your car is older or newer then a 2016. That's it. I know what to do if you tell me that information.    All kits come with the fuel disconnect tool. Tuning is required for the ECM to turn on flex capabilities.  Tuning is also available through Super Cruzes. Some older model cars require fuel injectors to be upgraded. If you would like a flex fuel tune for your vehicle here is a link to tune options. https://supercruzesstore.com/products/super-cruzes-tune-options