Hybrid Dual Outlet Diverter / Blow-Off Valve for Subaru Turbo Vehicles

The GFB Hybrid Dual Outlet Valve combines multiple venting configurations into a single serviceable valve body, allowing staged recirculation and atmospheric venting. This unique design helps balance sound and drivability, improving throttle response and reducing hesitation compared to simple atmospheric valves.

Configurable Venting Options

The Hybrid valve supports three venting modes:

• Full recirculation — Quiet, factory-style operation.
• Dual outlet (50/50) — Balanced sound and performance.
• Full atmosphere — Louder blow-off sound.

Staged Dual Outlet Operation

The valve opens the recirc port first, helping maintain smooth airflow under light throttle changes, and progressively opens the atmospheric port as boost increases for enhanced sound and performance.

Improved Boost Control

By improving boost sealing and providing more controlled venting behaviour, the hybrid design helps sharpen throttle response and boost recovery during dynamic driving conditions.