GFB-T9101 MACH 2 TMS (WRX MY08-on, GT Legacy MY03-09, XT Forester MY09-12)

🔧 GFB-T9101 MACH 2 TMS (Turbo Management System) Diverter Valve

THE SIMPLE & ESSENTIAL MOD FOR 30% QUICKER BOOST

UTILISING PROVEN TMS TECHNOLOGY TO ENSURE DEPENDABLE BOOST HOLDING AND OPTIMUM THROTTLE RESPONSE

If you don’t need the patented venting bias adjustment feature of the Respons or Deceptor Pro, the Mach 2 is the answer.

Using GFB’s TMS technology, the Mach 2 can help return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears.

⚙️ GFB-T9101 Mach 2 TMS Key Features

• Direct factory replacement recirculating diverter valve (plumb-back)
• Optional atmosphere vent conversion kit available
• Retains factory ECU solenoid control for instant response
• No additional adaptors, hoses, or modifications required
• Simple bolt-on installation – remove factory valve, install Mach 2
• Designed for performance without drivability compromise
• Compatible with a wide range of turbocharged platforms

🏁 Performance Benefits

⚡ Up to 30% Faster Boost Recovery
Returns engine to peak boost faster during gear changes.

🚀 Sharper Throttle Response
Reduces lag caused by factory bypass valve design.

🔒 Improved Boost Holding
Prevents leakage under higher boost conditions.

🔥 Factory-Like Driveability
Maintains smooth OEM operation with upgraded performance.

🔬 TMS Technology Explained

GFB’s Turbo Management System (TMS) improves valve control by:

• Keeping the valve closed under boost
• Opening instantly on throttle lift
• Reducing compressor surge
• Improving airflow stability during gear shifts

👉 Result: faster spool recovery, better drivability, and stronger boost consistency.

⚙️ Engineering Overview

Factory bypass valves are limited by soft spring design and slow response characteristics, leading to delayed boost recovery and reduced throttle precision.

The Mach 2 replaces the internal valve mechanism with a precision-engineered system designed to hold boost more effectively while responding instantly to throttle changes, without sacrificing OEM electronic control.

🔩 Specifications

• Product Type: Recirculating Diverter Valve (plumb-back)
• Technology: GFB TMS (Turbo Management System)
• Fitment: Direct OEM replacement
• ECU Compatibility: Fully retained factory solenoid control
• Upgrade Option: Atmosphere vent conversion kit available

🛠️ Installation Notes

• Direct bolt-on replacement
• No tuning required for standard recirc setup
• Retains factory plumbing and electronics
• Optional atmo vent kit for sound conversion
• Suitable for stock and mildly tuned vehicles

🚗 Vehicle Applications

• SUBARU WRX MY08–14 (GE / GH / GR / GHE / GEB variants)
• SUBARU XT MY09–13 (SH / SH9)
• SUBARU GT BL-BP EJ255 MY06–09
• SUBARU GT MY03–06 BL / BP platforms
• SUBARU GT EJ20T BL-BP MY03–06

🏆 Perfect For

• Daily driven turbo vehicles
• OEM+ performance upgrades
• Drivers wanting faster response without added noise
• Subaru WRX/XT/GT turbo platforms
• Reliable boost control improvements without complexity