GFB Mach 2 Recirculating Blow Off Valve - Subaru WRX/STI (GC8) MY99-00 / Forester GT (SF) / Forester XT (SG) MY03-05 / Liberty B4 (BE/BH)

The GFB Mach 2 is a direct bolt-on replacement for the factory bypass valve on the MY99-00 Subaru WRX and STI (GC8), 1997-2002 Forester GT (SF), MY03-05 Forester XT (SG) and 1998-2003 Liberty B4 (BE/BH). GFB's TMS technology helps the turbo get back to peak boost up to 30 percent faster on gear changes, and the valve holds boost well beyond what the factory turbo makes. It is fully recirculating, so there is no extra venting noise, though atmosphere conversion kits and trumpets can be added later. Forester XT (SG) owners must check the factory BOV flange first, as this valve suits the diamond flange only and triangle flange cars need a different GFB valve.

Features

• TMS technology for faster boost recovery between gear shifts
• 100 percent recirculating (plumb back), no added blow off noise
• Direct bolt-on, no adaptors or vehicle modification
• Holds boost well beyond factory turbo output
• Optional atmosphere conversion kits and trumpets (6110/5702) sold separately
• Diamond flange fitment for the Forester XT (SG)

Specifications

• Brand: GFB
• Product Type: Recirculating Blow Off Valve
• Series: Mach 2
• Technology: GFB TMS
• Venting: 100 percent recirculating (plumb back)
• Boost Recovery: Up to 30 percent faster on gear changes
• Flange: Diamond (Forester XT SG)
• Fitment: Direct bolt-on
• Part Number: T9100

Vehicle Compatibility: 4 applications across 1 make. Select a make to view.

Please confirm fitment against your vehicle before ordering. Contact us if you need help selecting the right part.