Mitsubishi Evo Type RS Blow off Valves provide increasing boost response between each shift for your Turbo Evo. Our Mitsubishi Evo blow off valves are adjustable to prevent both premature boost and boost leakage. Evo Blow off valves are designed for mild upgrade and heavily tuned Evo. Our Type-RS Evo Turbo blow off valves are easily installed because we provide all necessary hardware flanges. Buy yours today and get Free U.S. shipping!