GFB T9005 Respons Adjustable BOV Blow Off Valve Diverter Valve

The GFB Respons T9005 is an advanced blow-off valve and diverter valve designed to improve throttle response and reduce turbo lag on turbocharged vehicles. Featuring GFB's proprietary Turbo Management System (TMS), this valve returns the engine to peak boost up to 30% faster than factory diverter valves during gear shifts.

Adjustable Venting Bias System:

The Respons features GFB's patented adjustable venting bias system that allows infinite adjustment between full recirculation (silent operation) and atmospheric venting (audible blow-off sound). This unique dial-style adjustment lets you fine-tune the venting ratio to achieve your desired sound level without triggering check engine lights, running rich, stalling, or causing fuel economy issues commonly associated with atmospheric blow-off valves on MAF-equipped vehicles.

Key Features:

• TMS (Turbo Management System) technology for reduced turbo lag
• Spring pre-load adjustment for optimized throttle response
• Progressive bias adjustment from fully recirculated to fully atmospheric
• Manual venting adjustment via cap ring
• Can be locked in full recirculation mode for emissions compliance
• Available in universal hose-mount or direct bolt-on configurations

Best Applications:

• Vehicles with mass airflow (MAF) sensors requiring recirculation
• VW/Audi (VAG) applications sensitive to atmospheric venting
• Enthusiasts wanting adjustable blow-off sound without performance compromises
• Performance builds requiring faster boost recovery between shifts

The GFB Respons T9005 delivers both performance gains and customizable sound in a single high-quality valve engineered for reliability and precise boost control.