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Process West billet reverse-orientation inlet manifold (cable throttle) for Subaru Impreza 1992-2000 (GC/GF), finished in raw silver. Full billet plenum with polished, mandrel-bent tube components, TIG-welded and rated by Process West for up to 100psi boost. Requires the matching short-runner TGV delete kit (PWTD02).

Process West billet standard-orientation inlet manifold (cable throttle) for Subaru Impreza 1992-2000 (GC/GF), finished in black. Full billet plenum with polished, mandrel-bent tube components, TIG-welded and rated by Process West for up to 100psi boost.

Process West billet reverse-orientation inlet manifold (cable throttle) for Subaru Impreza 1992-2000 (GC/GF), finished in black. Full billet plenum with polished, mandrel-bent tube components, TIG-welded and rated by Process West for up to 100psi boost. Requires the matching short-runner TGV delete kit (PWTD02B).

Process West billet standard-orientation inlet manifold (cable throttle) for Subaru Impreza 1992-2000 (GC/GF), finished in raw silver. Full billet plenum with polished, mandrel-bent tube components, TIG-welded and rated by Process West for up to 100psi boost.

Process West billet reverse-orientation inlet manifold (drive-by-wire throttle) for Subaru Impreza / WRX STI 2008-2013 (GR/GV); Subaru Impreza 2006-2007 (GD/GG Hawkeye), finished in black. Full billet plenum with polished, mandrel-bent tube components, TIG-welded and rated by Process West for up to 100psi boost.

Process West billet TGV (Tumbler Generator Valve) delete kit for a range of Subaru Forester, Impreza/WRX/STI, Legacy/Outback, WRX/STI models, finished in black. Removes the restrictive standard butterfly-valve assembly; machined for ported heads and compatible with 11mm or 13mm injectors and aftermarket fuel rails.

Process West billet TGV (Tumbler Generator Valve) delete kit for a range of Subaru Forester, Impreza/WRX/STI, Legacy/Outback models, finished in raw silver. Removes the restrictive standard butterfly-valve assembly; machined for ported heads and compatible with 11mm or 13mm injectors and aftermarket fuel rails.

Process West billet TGV (Tumbler Generator Valve) delete kit — short version — for Subaru Forester 1996-2002 (SF); Subaru Impreza 1992-2000 (GC/GF); Subaru Legacy 1992-2003, finished in raw silver. Used when retro-fitting the two-piece inlet manifold to earlier GC8/GF8 models so the manifold clears the bonnet.

Process West billet TGV (Tumbler Generator Valve) delete kit — short version — for Subaru Forester 1996-2002 (SF); Subaru Impreza 1992-2000 (GC/GF); Subaru Legacy 1992-2003, finished in black. Used when retro-fitting the two-piece inlet manifold to earlier GC8/GF8 models so the manifold clears the bonnet.

Process West billet TGV (Tumbler Generator Valve) delete kit for a range of Subaru Forester, Impreza/WRX/STI, Legacy/Outback, WRX/STI models, finished in raw silver. Removes the restrictive standard butterfly-valve assembly; machined for ported heads and compatible with 11mm or 13mm injectors and aftermarket fuel rails.