About this range

MACH 2: 100% Recirculating Diverter Valve

THE SIMPLE AND ESSENTIAL MOD FOR  QUICKER BOOST RESPONSE

Utilising Proven Tms Technology To Ensure Dependable Boost Holding And Optimum Throttle Response

Blow off sound not to your taste? Want something as “sleeper” as possible? Don’t want your partner to know you’ve stuck a turbo on the daily (again)? Then the GFB Mach 2 is the valve for you!

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 (more information below).

The Mach 2 is available in a range of universal and bolt-on kits for most popular turbo models. And when we say “bolt-on”, that’s exactly what we mean! No additional adaptors, parts or vehicle modifications are required – simply remove the factory bypass valve and replace it with the Mach 2 – it’s that simple!

The Mach 2 is configured as a 100% recirculating valve (i.e. bypass, plumb back) as a direct factory replacement, for when you want all the performance WITHOUT the noise!

Why replace the factory bypass valve? Better performance! Factory bypass valves typically have two main shortcomings – one is that they are often designed to blow open above a certain pressure to protect the engine (if you drive an EVO, take note and read this article!), and the other is they are not optimised for throttle response.

The Mach 2 solves both issues. With its pressure-balanced design, the Mach 2 can effectively hold unlimited boost (unlimited in that no turbo could ever produce enough pressure to damage it), and the TMS technology ensures maximum throttle response.

Vehicle Applications
Mach 2 TMS Recirculating Diverter valve (35mm inlet, 30mm outlet - suits MY97-98 WRX/STi) also suits:
MITSUBISHI Cordia AA-AC 4G62 83-89 
MITSUBISHI Starion JA-JD 4G63 82-88 
MAZDA 626 GT GC FET 86-87 
TOYOTA Celica GT-Four ST185 3S-GTE 89-93 
TOYOTA Celica GT-Four ST205 3S-GTE 94-99 
NISSAN GTi-R N14 SR20DET 1990-1995 
NISSAN 300ZX Z32 VG30DETT 89-97
SUBARU WRX MY97-98
SUBARU STi MY94-96
MAZDA 626 GD F2 Turbo 87-91
HOLDEN Commodore VL RB30ET 86-88 
NISSAN 180SX S13 1.8 CA18DET 89-92 
NISSAN 180SX S13 2.0 SR20DET
FORD AUSTRALIA TX5 AT F2 Turbo 87-89 
MITSUBISHI Cordia AA-AC 4G62 83-89 
MAZDA MX6 GD F2 Turbo 87-91 
NISSAN Silvia S13 2.0 SR20DET 88-94