Wiseco FMC117 Fuel Management Controller for Yamaha YZF-R6/S Wiseco's new electronic fuel injection controllers are simple and easy to use, with the push of a button, you can easily adjust fuel flow for modifications such as high compression pistons, cams, intake, and exhaust to fine tune your bike There is no dyno or computer needed; it gives you three basic zones of operation, similar to a carburetor The first zone sets your idle to 1/4 throttle, the second sets 1/4 to 1/2 throttle, and the third zone sets 1/2 to wide open throttle Features simple to use and understand push button operation for easy air/fuel ratio adjustment and plug n' play installation For: Yamaha YZF-R6/S 2003-08 (not emissions legal in California; for closed-course competition use only)