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Black anodized billet aluminum construction
higher-flow top-feed injectors to be used in the existing side-feed manifold architecture
eliminating the pulse interference of the factory manifold and contributing to faster spool
Exhaust hangers are welded onto the OEM locations to make for a direct replacement
The result is a faster responding valve that purges boost quickly between shifts to keep the turbo spooling for improved overall performance
HKS Super SQV4 Blow Off Valve - 2002-2007 Subaru WRX / STI / 2006-2008 Forester XT PDM_clutches Black anodized billet aluminum constructionHKS Super SQV4 Blow Off Valve 2002 2007 Subaru WRX STI 2006 2008 Forester XT Sequential Suction Valve Technology The HKS Super SQV (Sequential Suction Valve) is developed through HKS's turbocharger engineering program a company that builds complete turbo kits understands what happens at the compressor inlet. The SQV4 uses a sequential valve mechanism that provides smooth boost response across the full pressure range, protecting the compressor wheel
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