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

GFB’s Hybrid dual outlet valve combines multiple venting configurations into one serviceable valve. Designed to deliver configurable blow-off behaviour on compatible Subaru models, it allows staged recirculation and atmospheric venting for a balance of sound and drivability.

Three Venting Modes

The Hybrid design allows the valve to be configured as:

• Full recirculation — quiet, factory-style operation
• Dual outlet (recirculation + atmosphere) — balanced response and sound
• Full atmosphere venting — louder blow-off sound

Staged Dual Outlet Operation

The valve opens the recirculation port first to maintain smooth airflow and reduce hesitation, then progressively opens the atmospheric port as boost pressure increases — helping to avoid driveability issues common with simple atmospheric blow-off valves. 

Improved Boost Control

By enhancing boost sealing and allowing controlled pressure release, the T9201 helps improve throttle response and boost recovery compared to many factory valves while giving you control over the sound and performance characteristics.