This new and innovative fuel injector features an internal rotating cylinder instead of traditional throttle shafts and butterflies. The rotary design produces unrestricted air flow with maximum torque and horsepower throughout the full range of throttle openings. The result is outstanding acceleration and instant throttle response! Air inlets with 1 inch removable adapters allow you to tailor the torque according to the type of racing or track conditions. Changing heads? No problem, the rotary injector can be reused, with only the purchase of new plates machined to fit the new heads.