Blow Off Valves

ALL THE PERFORMANCE WITH OR WITHOUT THE NOISE!, GFB’s Mach 2 utilises GFB’s proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost pressures of 100psi+. Put simply, it can hold more boost than any turbo could produce
GFB’s Mach 2 diverter valve is configured from the factory for full recirculation (i.e. plumb back, diverter, bypass) venting for the performance-minded who just want the benefits without the sound. Atmosphere venting kits also available.
Mitsubishi 33mm inlet, 33mm outlet – suits EVO I-X

ALL THE PERFORMANCE WITH OR WITHOUT THE NOISE!, GFB’s Mach 2 utilises GFB’s proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost pressures of 100psi+. Put simply, it can hold more boost than any turbo could produce
GFB’s Mach 2 diverter valve is configured from the factory for full recirculation (i.e. plumb back, diverter, bypass) venting for the performance-minded who just want the benefits without the sound. Atmosphere venting kits also available.
Subaru 35mm inlet, 30mm outlet – suits MY97-98 WRX/Sti

ALL THE PERFORMANCE WITH OR WITHOUT THE NOISE!, GFB’s Mach 2 utilises GFB’s proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost pressures of 100psi+. Put simply, it can hold more boost than any turbo could produce
GFB’s Mach 2 diverter valve is configured from the factory for full recirculation (i.e. plumb back, diverter, bypass) venting for the performance-minded who just want the benefits without the sound. Atmosphere venting kits also available.
Subaru WRX MY01-07, STi MY02-on, XT Forester MY05-08

ALL THE PERFORMANCE WITH OR WITHOUT THE NOISE!, GFB’s Mach 2 utilises GFB’s proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost pressures of 100psi+. Put simply, it can hold more boost than any turbo could produce
GFB’s Mach 2 diverter valve is configured from the factory for full recirculation (i.e. plumb back, diverter, bypass) venting for the performance-minded who just want the benefits without the sound. Atmosphere venting kits also available.
Subaru WRX MY08-on, GT Legacy MY03-09, XT Forester MY09-12

• Mach II Diverter Valve and atmo option for the performance-minded who just want the benefits without the sound. Atmosphere venting kits also available.

ALL THE PERFORMANCE WITH OR WITHOUT THE NOISE!, GFB’s Mach 2 utilises GFB’s proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost pressures of 100psi+. Put simply, it can hold more boost than any turbo could produce
GFB’s Mach 2 diverter valve is configured from the factory for full recirculation (i.e. plumb back, diverter, bypass) venting for the performance-minded who just want the benefits without the sound. Atmosphere venting kits also available.
Subaru 2015-on WRX/ Forrester

ALL THE PERFORMANCE WITH OR WITHOUT THE NOISE!, GFB’s Mach 2 utilises GFB’s proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost pressures of 100psi+. Put simply, it can hold more boost than any turbo could produce
GFB’s Mach 2 diverter valve is configured from the factory for full recirculation (i.e. plumb back, diverter, bypass) venting for the performance-minded who just want the benefits without the sound. Atmosphere venting kits also available.
Subaru WRX/STi MY99-00, B4 Legacy, GT/XT Forester MY98-04

ALL THE PERFORMANCE WITH OR WITHOUT THE NOISE!, GFB’s Mach 2 utilises GFB’s proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost pressures of 100psi+. Put simply, it can hold more boost than any turbo could produce
GFB’s Mach 2 diverter valve is configured from the factory for full recirculation (i.e. plumb back, diverter, bypass) venting for the performance-minded who just want the benefits without the sound. Atmosphere venting kits also available.
Nissan GT-R R35 – 2 valves included

ALL THE PERFORMANCE WITH OR WITHOUT THE NOISE!, GFB’s Mach 2 utilises GFB’s proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost pressures of 100psi+. Put simply, it can hold more boost than any turbo could produce
GFB’s Mach 2 diverter valve is configured from the factory for full recirculation (i.e. plumb back, diverter, bypass) venting for the performance-minded who just want the benefits without the sound. Atmosphere venting kits also available.
Nissan/Mazda Skyline GTS-T R32-34, Mazda 3 & 6 MPS, CX-7

If cars like yours typically suffer issues such as backfiring and stalling when using a fixed-ratio atmosphere-venting BOV, the Respons can help. By adjusting the venting bias to suit the car you can achieve a blow-off sound without having to put up with the issues. Like all GFB valves, the Respons utilises GFB’s proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost pressures of 100psi+. Put simply, it can hold more boost than any turbo could produce.
GFB’s Respons, allowing you to infinitely vary how much air is recirculated or vented to atmosphere. Simply by twisting the adjustment ring, you can change the sound of your BOV from silent to ear-shattering!?.
Mitsubishi 33mm inlet, 33mm outlet – suits EVO I-X

• Patented Venting Bias Adjustment
  Sysem-Can be Infinitely Adjusted between
  Full Recirc (silent) and full atmosphere (loud). Change the venting bias simply by twisting the adjustment

Control the sound of your BOV “ON-THE-FLY” Go on, admit it. There are times you wish you could have that signature turbo blow off sound, but you’re not prepared to listen to it all the time. GFB’s Deceptor Pro II delivers just what you need ? the ability to control how loud your BOV sound is, from the driver’s seat.To top it off, if your car typically suffers issues such as backfiring and stalling when venting more than a certain percentage of air to atmosphere, the controller can easily be configured to limit the maximum venting ratio. This way, you can achieve a blow-off sound without having to put up with the issues.
Featuring our patented Venting Bias Adjustment System, coupled with remote electronic control, the Deceptor Pro II allows you to infinitely vary how much air is recirculated, and how much is vented to atmosphere.
Nissan Skyline GTS-T R33-34

• WIRING LOOM INCLUDED,
  ONLY REQUIRES 12V POWER SUPPLY HUGE RANGE OF DIRECT BOLT-ON KITS
  100PSI+ BOOST HOLDING ABILITY MANUFACTURED IN AUSTRALIA IN ACCORDANCE WITH ISO 9001

The factory diverter valve on Polaris SxS models is made from plastic with a rubber diaphragm. It is known to rupture and cause significant boost leaks, and its “normally open” design means that part throttle boost response is always compromised. The GFB DV+ is a direct replacement diverter valve that offers the ultimate in reliability and performance, backed by a lifetime warranty.
DV+ for Polaris RZR Turbo models. Direct replacement for plastic factory valve, offers better throttle response and reliability, solves boost leak issues

• Direct bolt on kit, CNC machined metal construction ensures reliability under extreme conditions and permanently solves boost leaks. Adjustable spring pre-load and balanced piston design ensures optimum throttle response.

Strength and reliability is the primary factor, something that a diaphragm simply cannot match in a high-boost BOV environment. Diaphragms have their place (we use them in our wastegates), as they offer low friction and good sealing capability. However, a rolling diaphragm is only designed to receive a net pressure on one side, which essentially “inflates” it against the walls of the chamber in which it resides, exactly how it is used in a wastegate
Standing only 86mm tall (including the weld-on Adaptor), the SV52 is 10mm shorter than the nearest competitor, AND flows more.
Universal SV52 – High Flow/High Pressure Racing Dump Valve (Alloy Weld On)

• Consider these questions when you’re looking for a BOV for your high-powered, forced induction engine:
  YES! Is 300psi enough?
  YES! It outflows everything else in its class!