GFB Mach 2 TMS Recirculating Diverter Valve Subaru 99-00 WRX/STi/B4 Legacy / 98-04 GT/XT Forester | T9100 Perrin - Precision Turbo Small /

- Precision Turbo Small / Mid Frame T3 / T4

and any other application where a steel crankshaft is used under extreme conditions

the heat stays where it's supposed to be and out of your engine bay

The ISR Performance VQ35DE swap mounts are designed to be your one stop solution for mounting the VQ35DE into both S13 and S14 chassis

you're in the right place

GFB Mach 2 TMS Recirculating Diverter Valve Subaru 99-00 WRX/STi/B4 Legacy / 98-04 GT/XT Forester | T9100 Perrin - Precision Turbo Small /Compatible Applications Subaru Impreza GT (19982000) EJ205 Subaru WRX (19992000) Subaru STI (19992000) Subaru Legacy B4 Twin Turbo (19982003) Subaru Forester GT XT (20012004, Series I) The GFB Mach 2 TMS Recirculating Diverter Valve is a high performance, direct fit replacement for factory bypass or diverter valves. Designed with GFBs Turbo Management System (TMS) technology, this valve improves boost response, throttle feel, and reliabilityall while