GFB-T9001 Respons TMS Diverter / Blow-Off Valve

GFB-T9001 Respons TMS Diverter / Blow-Off Valve (WRX MY08-on, GT Legacy MY03-09, XT Forester MY09-12)

🔧 Product Description

The GFB Respons TMS Diverter / Blow-Off Valve (WRX MY08-on, GT Legacy MY03–09, XT Forester MY09–12) is a high-performance adjustable dual-port blow-off valve designed to deliver precise venting control, improved throttle response, and faster boost recovery across a range of Subaru turbocharged applications.

Featuring GFB’s patented Venting Bias Adjustment System, the Respons allows drivers to fine-tune how much air is recirculated versus vented to atmosphere — providing complete control over sound and performance behaviour without compromising drivability.

⚙️ Key Features

• Dual-port adjustable blow-off / diverter valve design
• Patented Venting Bias Adjustment System
• Adjustable sound output (silent OEM → full atmospheric venting)
• Maintains ECU-controlled operation for factory drivability
• High-flow precision-machined valve body
• Unlimited boost-holding capability in performance applications
• Direct-fit kits for Subaru turbo platforms
• Designed for both stock and tuned engines

🏁 Performance Benefits

⚡ Faster Boost Recovery
Returns engine to peak boost up to 30% faster than factory diverter valves using GFB’s TMS technology.

🚀 Improved Throttle Response
Reduces lag during gear changes and throttle modulation.

🔊 Adjustable Blow-Off Sound
Fine-tune venting bias from fully silent recirculation to maximum atmospheric “whoosh”.

🔒 Stable Boost Control
Prevents boost leakage and improves consistency under load.

🔬 TMS Technology Explained

GFB’s Turbo Management System (TMS) optimises valve performance by:

• Keeping the valve closed under boost
• Opening instantly on throttle lift
• Ensuring smooth airflow transition between shifts
• Reducing compressor surge and boost recovery delay

👉 Result: sharper response, improved drivability, and consistent turbo performance.

🚗 Vehicle Applications

• SUBARU WRX MY08–14 (GE / GH / GR chassis)
• SUBARU GT Legacy BL/BP (MY03–09 EJ20T / EJ255 platforms)
• SUBARU XT Forester SH (MY09–13)

Designed for a wide range of Subaru turbocharged EJ platforms across wagon, sedan, and SUV configurations.

🔩 Specifications

• Product Type: Adjustable Dual-Port Diverter / Blow-Off Valve
• Model: GFB Respons TMS Subaru Application
• Technology: TMS + Venting Bias Adjustment System
• Fitment: Direct bolt-on OEM replacement kits
• Control: ECU-integrated solenoid compatibility (application dependent)
• Material: Precision-machined aluminium construction

🛠️ Installation Notes

• Direct-fit replacement for factory diverter valve systems
• No ECU tuning required for installation
• Retains OEM solenoid and vacuum control
• Suitable for stock and modified turbo setups
• Compatible with recirculation and atmospheric venting modes

💡 Why Choose the Respons TMS?

If you want:

• Adjustable turbo blow-off sound
• Faster boost recovery between shifts
• OEM drivability with performance gains
• Reliable boost control under high load
• A true performance upgrade over factory valves

👉 The Respons TMS delivers performance, sound control, and drivability in one precision-engineered package.

🏆 Perfect For

• Subaru WRX performance builds
• GT Legacy turbo upgrades
• Forester XT turbo applications
• Enthusiasts wanting adjustable BOV sound
• OEM+ and tuned Subaru setups