Process West Intake Manifold Street Version Subaru STI 2004-2021 | PWIM002 1300 this atmospheric diverter valve dumps

this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars when the throttle is lifted

2002-2004 SUBARU IMPREZA OUTBACK 2

Upgraded engine internals is strongly recommended for this turbo

so you know you are getting one of the best products possible from one of the most respected names in automotive performance

5XT-R is a little tweak to our already popular Dom 2

Process West Intake Manifold Street Version Subaru STI 2004-2021 | PWIM002 1300 this atmospheric diverter valve dumpsProduct Fitment: 2004 2021 Subaru STI The Process West Billet Intake Manifold range represents the pinnacle of design, engineering, and performance for Subaru WRX and STI platforms. Born from years of R&D, extensive testing, and countless prototype iterations, this manifold is the result of a no compromise approach to performance and aesthetics. Crafted for both street and race applications, the manifold is available in multiple configurations to suit