Adjustable Diverter / Blow-Off Valve With Venting Control

The GFB Respons TMS T9020 replaces the standard factory diverter or blow-off valve on select turbocharged vehicles, adding an adjustable system that lets you control how much air is vented to atmosphere versus recirculated.

Customizable Sound and Driveability

With the venting bias adjustment, you can choose full recirculation for quiet operation, full atmospheric venting for enhanced sound, or a balance between the two. This lets you tailor performance and blow-off noise without compromising drivability on sensitive engines.

Boost Recovery and Response

Using GFB’s TMS (Turbo Management System) principle, the T9020 vents only what’s needed at the right time, helping the turbo recover boost more quickly after gear changes and improving overall throttle response compared to many stock diverter valves.

Direct Bolt-On Design

Where listed below, this valve fits directly into the factory valve location using existing hoses and mounting points. No permanent modifications or adapters are required for direct fit applications.

Quality and Durability

Built to handle repeated thermal cycles and turbocharger pressures, the Respons T9020 is crafted with high-quality materials and GFB’s proven internal design, making it suitable for both daily-driven cars and performance setups.