🔧 GFB-T9100 MACH 2 TMS – Recirculating Diverter Valve (30% Faster Boost Recovery)

The GFB Mach 2 TMS is the simple, essential performance upgrade for turbocharged engines that want faster boost recovery, sharper throttle response, and OEM-style reliability without unnecessary complexity.

Built around GFB’s proven TMS (Turbo Management System) technology, the Mach 2 is designed to outperform factory diverter valves in both response and boost control — while maintaining a direct bolt-on, factory-style installation.

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⚙️ GFB-T9100 MACH 2 TMS What Makes the Mach 2 Different?

If you don’t need adjustable venting or sound control, the Mach 2 delivers:

✔ Pure performance-focused diverter valve
✔ No venting bias adjustment system
✔ Direct factory-style replacement
✔ Available in recirculating or atmosphere conversion setups
✔ Built around proven TMS boost management technology

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🚀 Performance Benefits

⚡ Up to 30% Faster Boost Recovery
Returns the engine to peak boost faster during gear changes compared to factory diverter valves.

🎯 Sharper Throttle Response
Reduces lag caused by OEM valve opening characteristics.

🔒 Improved Boost Holding
Eliminates leakage issues common in factory plastic diaphragm valves.

🌬 Stable Turbo Operation
Maintains consistent airflow and reduces compressor instability.

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🧠 TMS (Turbo Management System) Technology

The Mach 2 utilises GFB’s TMS engineering philosophy:

• Holds valve closed under boost for maximum efficiency
• Opens instantly on throttle lift for rapid pressure release
• Optimises airflow transition during gear changes
• Improves turbo spool recovery and drivability

👉 Result: faster response, stronger boost retention, and smoother transitions.

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🔩 Design & Construction

✔ Precision CNC-machined aluminium body
✔ Reinforced internal sealing system
✔ High-strength valve mechanism for boost durability
✔ Designed for long-term reliability under performance conditions
✔ OEM-style fitment with no modifications required

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🔧 Venting Options

🔵 Recirculating Model (Standard)

• 100% OEM-style bypass operation
• Quiet operation
• Ideal for daily driven performance cars

🟡 Atmosphere Conversion Kit (Optional)

• Converts valve to vent-to-atmosphere operation
• Adds blow-off sound
• Maintains performance without stalling or drivability issues

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🚗 Vehicle Applications

SUBARU

• WRX GC8 / GF / GF8 (MY98–00)
• STI GC / GFC (MY99–00)
• B4 BE / BH / BT EJ20TT (MY98–03)
• GT SF / SF5 (MY98–02)
• XT SG / SG9 (MY02–04)

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🛠 Installation Notes

✔ Direct bolt-on OEM replacement
✔ No vacuum line modifications required
✔ Retains factory ECU solenoid control (where applicable)
✔ No tuning required
✔ Quick installation with factory mounting points

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💡 Why Choose the Mach 2?

If you want:

• Noticeably faster boost recovery
• OEM reliability with performance gains
• Simple plug-and-play installation
• No unnecessary adjustment systems
• A proven, no-fuss turbo upgrade

👉 The Mach 2 is the cleanest performance-focused DV upgrade in the GFB range

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🏁 Perfect For

• Subaru turbo performance builds
• OEM+ reliability upgrades
• Daily driven WRX / STI setups
• Enthusiasts wanting performance without complexity
• Drivers who prefer recirc over loud blow-off sound