Fuel Management Controller John Deere Gator 13Caracteristicas: Three basic zones of operation, similar to a carburetor one zone sets the "pilot jet" for idle and cruise, another sets the "needle jet" for acceleration and a third zone sets the "main jet" for heavy loading and wide open throttle Simple to use and understand system provides easy air fuel ratio adjustment Easily adjusts for modifications intake, exhaust, cams, etc. Tuning capabilities superior to Alpha N type controllers Uses OEM