2004-2007 Subaru STi - Forced Induction

GrimmSpeed Top Mount Intercooler (TMIC) Splitter, 2004-2005 WRX w/ STi Scoop

GrimmSpeed Top Mount Intercooler Kit (Black), 2002-2007 WRX & 2004-2021 STi

GrimmSpeed Manual Boost Controller (Black)

GrimmSpeed 3-Port Electronic Boost Control Solenoid (EBCS), 2004-2007 STi & 2006-2007 WRX

GrimmSpeed V-Band 38mm External Wastegate Block-Off Plate

GrimmSpeed V-Band 44mm External Wastegate Block-Off Plate

GFB HYBRID TMS Dual Port Blow Off Valve, 2002-2007 WRX & 2004-2021 STi

GFB Mach 2 TMS Recirculating Valve, 2002-2007 WRX & 2004-2021 STi

Greddy Profec Electronic Boost Controller (EBC)

GFB Whistling Trumpet Attachment (High Boost)

GFB Whistling Trumpet Attachment (Low Boost)

GFB Deceptor Pro II Blow Off Valve, 2002-2007 WRX & 2004-2021 STi

GFB RESPONS TMS Blow Off Valve, 2002-2007 WRX & 2004-2021 STi

GFB EX50 External Wastegate - EWG (50mm, V-Band Mount)

GFB EX50 EWG Weld-On Outlet

GFB EX50 EWG Weld-On Inlet

GFB EX50 EWG 9psi Spring (Middle)

GFB EX50 EWG 7psi Spring (Inner)

GFB ATOMIC Manual Boost Controller (MBC)

GFB EX50 EWG 13psi Spring (Outer)

Forge Motorsport Recirculating Bypass Valve (Polished), 2002-2007 WRX & 2004-2021 STi

Company23 Standard Boost Control Solenoid, 2002-2007 WRX & STi

Blouch 20G-XT Turbo w/ Billet Wheel (10cm), 2002-2007 WRX & 2004-2021 STi