For Volkswagen GTI Jetta for Audi 1.8T 2.7T Blow Off Valve S Diverter Turbo BOV Boost. Type: Hybrid style diverter valve / blow off valve. For VW Audi 1.8T Golf Jetta New Beetle Passat, A4, TT. The Splitter valve is also adjustable to suit your engine and can be converted to be totally recirculating if you ever require a stealth approach!
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