This harness and computer are for a stock or nearly stock 2.0L LSJ Ecotec. I.E. stock injectors, drive by wire throttle body, stock MAP sensor and stock pulley. We use a blend of speed density and MAF, so this system uses a MAF sensor along with the upstream O2 sensor. The controller is an OEM P12 and includes a performance tune based off of hundreds of dyno hours. Custom E85, Race Gas, Larger Injectors, Cams, and smaller pulley tunes are available for an additional fee.
This system will work with all 2.0L LSJ Ecotecs running the 58x reluctor wheel and individual coil packs and electronic throttle body. It will not work on a direct injected motor. It comes with a full diagram and labels all connectors. We need to know what map sensor you have, what knock sensor, and whether you have a small or large alternator plug.