HYBRID TMS Dual Outlet (WRX MY01-07, STi MY02-on, XT Forester MY05-08)

🔧 HYBRID TMS DUAL OUTLET

(WRX MY01–07, STi MY02-on, XT Forester MY05–08)

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🔥 THE HYBRID IS BACK!

Celebrating 20 Years Since the World’s First Dual Outlet Blow-Off Valve

In a time before Justin Bieber, Y2K, and even Google, the year is 1998—and GFB’s founding engineer John Adrian was so sick of his new WRX stalling with an atmosphere-venting BOV that he decided he didn’t want to live in a world any longer without a dual port BOV…

…so he invented it.

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🧠 THE ORIGINAL INNOVATION

The original “Hybrid” was the world’s first dual outlet blow-off valve and became the flagship product of Go Fast Bits.

Its revolutionary staged dual-port design works by:

• Opening the recirculation port first
• Then opening the atmosphere port under higher load
• Preventing stalling, backfiring, and drivability issues on MAF-equipped vehicles
• Still delivering strong blow-off sound under hard driving

This innovation became the foundation for nearly all modern dual-port BOV systems.

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⚙️ EVOLUTION OF THE TECHNOLOGY

The Hybrid directly led to:

• Respons TMS – venting bias adjustable system
• Deceptor Pro II – electronically controlled venting adjustment system

Now, the original is back—updated for modern performance applications.

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🏁 KEY FEATURES

• Dual outlet staged venting system (recirc + atmosphere)
• Configurable venting: full recirc / full atmo / 50-50 split
• Improved drivability on MAF-equipped turbo engines
• Direct bolt-on replacement for factory diverter valves
• Designed for OEM+ performance and sound balance
• Modernised internal control for improved response
• Wide range of vehicle-specific kits available

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🚀 PERFORMANCE BENEFITS

⚡ Improved Boost Response
Faster recovery between shifts compared to factory valves.

🔊 Controlled Blow-Off Sound
Adjustable venting behaviour depending on setup and preference.

🔒 No Stalling or Backfiring
Dual-port staging maintains stable airflow on sensitive MAF systems.

🔥 OEM+ Driveability
Keeps factory smoothness while adding performance character.

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🔬 ENGINEERING OVERVIEW

The Hybrid system uses a staged dual-port venting architecture that manages pressure release progressively rather than dumping charge air abruptly.

This ensures:

• Stable airflow during throttle lift
• Reduced compressor surge
• Smooth ECU airflow transitions
• Improved drivability under all conditions

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🔩 SPECIFICATIONS

• Product Type: Dual Outlet Blow-Off / Diverter Valve
• Venting Modes: Recirc / Atmosphere / Hybrid split
• Fitment: Direct OEM replacement (vehicle-specific kits)
• ECU Compatibility: MAF-safe operation
• Part Number: GFB-T9203 (selected applications)

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🚗 VEHICLE APPLICATIONS

• SUBARU WRX MY01–07 (GD / GDA / GDB / GGG platforms)
• SUBARU STi MY02–07 (GD series)
• SUBARU STi MY08–13 (GR / GE / GH platforms)
• SUBARU XT Forester MY05–08 (SG / SG9)
• SUBARU STi 2014-on (GJ / FKH platforms)

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🏆 PERFECT FOR

• Subaru WRX & STi performance builds
• Drivers wanting sound + drivability balance
• OEM+ turbo upgrades
• MAF-equipped turbocharged engines
• Enthusiasts wanting adjustable venting behaviour