GFB T9001 Respons TMS Diverter Valve for 2006-2014 Subaru WRX/Forester/Legacy

Vehicle Fitment

• 2003-2009 Subaru Liberty/Legacy GT (BL-BP, EJ20T/EJ255, AWD)
• 2006-2009 Subaru Legacy/GT (BL-BP, EJ20T/EJ255, AWD)
• 2008-2014 Subaru Impreza/WRX (GR-GE, EJ25T, AWD)
• 2009-2013 Subaru Forester XT (SH, EJ255, AWD)

Features

• Patented adjustable Venting Bias system (recirc↔atmo)
• TMS (Turbo Management System) for up to 30% faster boost recovery
• Infinite bias adjustment ring for sound control
• Balanced-piston design resists high boost (>100 psi)
• Direct bolt-on installation - no modifications required
• Spring pre-load adjustable via 5 mm hex screw
• ISO 9001-certified Australian manufacturing
• Cannot be forced open by high boost pressure

Specifications

• Material: 6061-T6 aluminium, black anodised
• Weight: ~0.6 kg; dimensions: ~17.5 x 8 cm :contentReference[oaicite:4]{index=4}
• Venting outlet: trumpet-style atmo + recirc
• Spring adjustment via central screw (max 3 mm protrusion) :contentReference[oaicite:5]{index=5}
• Boost holding capability: over 100 psi :contentReference[oaicite:6]{index=6}
• Direct-fit kit with correct flange gasket and clamp hardware

Included Components

• 1x T9001 Respons TMS valve assembly
• 1x flange gasket
• 2x mounting bolts (size per vehicle application)
• 1x hose clamp for vacuum outlet
• 1x 5 mm hex key for adjustment

Product Description

The GFB T9001 Respons TMS is a high-performance diverter valve designed for turbocharged Subaru models between 2003 and 2014. It replaces the restrictive factory valve to dramatically improve throttle response and boost recovery, making gear changes snappier and more consistent. Featuring GFB's patented Venting Bias Adjustment, you can fine-tune the balance between recirculation and atmospheric venting - ranging from silent OEM operation to aggressive sound - without risking backfire or ECU issues.

Built around the Turbo Management System (TMS), this valve remains closed until needed and opens precisely on throttle lift, guaranteeing up to 30% faster boost buildup than stock :contentReference[oaicite:7]{index=7}. The robust aluminium body resists high boost (100+ psi), and the spring preload can be adjusted with the included hex key for personalized throttle response. Installation is straightforward: unbolt the factory diverter, fit the gasket, bolt on the GFB valve, reconnect the vacuum hose, and adjust bias. Fitment is confirmed through 2014; support for later models is unverified at this time.