The JetWorks Flow Control Valve provides improved throttle response and much quicker starts by drying out your pipe and water-box at low rpm and idle speeds. Tests have shown an average acceleration improvement of 10 feet over a non-equipped model in the first 50 feet. The Flow Control Valve allows unrestricted water flow to the stinger for better top speed. Yet is controls the amount of water at low speeds for better throttle response. It also allows for an easier tuning of the carburetors. It does not interfere with normal engine or exhaust cooling and is compatible with all electronic water injection systems. Race Legal for All Classes.