Impreza WRX STI 97-98 35mm In / 30mm Out Recirc Mach 2 [T9135]

MACH 2: 100% Recirculating Diverter Valve

The Simple & Essential Mod for Quicker Boost Response

Using proven TMS technology, the GFB Mach 2 ensures dependable boost holding and optimal throttle response.

Not a fan of blow-off sounds? Want a stealthy, sleeper setup? Need to keep your daily driver turbo upgrade under wraps? The Mach 2 is the perfect solution!

With TMS technology, the Mach 2 helps your engine return to peak boost up to 30% faster than a factory diverter valve when shifting gears.

Key Features:

• 100% recirculating design for performance without the noise
• Bolt-on installation – no adaptors, extra parts, or modifications required
• Direct factory replacement – simply swap out the stock valve
• Holds unlimited boost with a pressure-balanced design
• Maximizes throttle response with GFB’s TMS technology

Why Upgrade from a Factory Bypass Valve?

Most factory bypass valves have two major flaws:

1. They often leak at high boost pressures, reducing performance.
2. They are not optimized for throttle response, causing slower boost recovery.

The Mach 2 eliminates both issues, delivering stronger, more consistent boost and quicker response times.

Upgrade to the GFB Mach 2 and experience better performance without the noise!

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