With Blitz dump valves you can choose between the supplied with ally trumpet or mini SUS filter to accomplish your favourite dump valve sound. These Blitz Blow Off Valves Improve turbo response by releasing boost pressure and preventing turbo stall. Not only is vehicle performance improved but the polished aluminium with brass piston enhances any engine bay appearance. Blitz dump valves also feature ''Dual Drive" for maximum response, a small port for low boost and a larger port for high boost.
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