GFB Respons Dual Port Variable BOV - Subaru WRX/STI (GC8) MY99-00 / Forester GT (SF) / Forester XT (SG) MY03-05 / Liberty B4 (BE/BH)

The GFB Respons dual port variable blow off valve is a direct bolt-on kit for the MY99-00 Subaru WRX and STI (GC8), Forester GT (SF), MY03-05 Forester XT (SG) and Liberty B4 (BE/BH). It only suits cars with the diamond flange factory blow off valve, as triangle flange cars need GFB part T9503 instead, so check your flange shape before ordering. GFB's patented venting bias adjustment divides the vented air between the atmosphere and recirculation ports as you choose, so you can have a blow off sound while avoiding the stalling or over-fuelling that sensitive MAF cars are prone to. It also sharpens throttle response and brings boost back faster between gearshifts.

Features

• Patented venting bias, adjustable between 100% recirculating and 100% atmosphere
• Balanced piston can't be forced open by high boost
• TMS operation keeps the valve closed until it has to open
• Up to 30% quicker return to boost after a gearshift than a factory diverter valve
• Fits the factory location with no adaptors or modifications

Specifications

• Brand: GFB
• Product Type: Dual Port Variable Blow Off Valve
• Series: Respons TMS
• Flange: Diamond flange only (triangle flange cars need T9503)
• Venting Adjustment: 100% recirculation to 100% atmosphere
• Installation: Direct bolt-on, factory location
• Part Number: T9000

Vehicle Compatibility: 5 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.