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The Forge Motorsport blowoff valve for the 2008-2014 Subaru WRX is a direct, bolt-on fit (does NOT fit the STI models). This replaces the factory plastic unit with a much more versatile valve. The valve vents to the atmosphere giving a louder, more pronounced intake pressure relief during shifting and throttle closures. It comes with 2 different springs for a wide range of boost pressure ability. All hardware needed for installation is included.
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