Go Fast Bits

GFB Mach 2 Atmosphere Conversion Kit-Changes T9103 or T9133 from Recir to Atmosphere - 5933

Mach 2 Atmosphere upgrade kit to convert mach 2 from recirculting to atmosphere venting BOV. Consisting of trumpet, spring and plug.

GFB Plunger Spring for DV Valve - 6119

DV+ Replacement Plunger Spring Fits DV+ ( valves from T9351-T9359)

GFB Screw-In Plug (screws into any GFB Trumpet or plumb-back outlet. Valves manufactured before 2003 - 6107

Screw-In Plug (screws into any GFB trumpet or plumb-back outlet, except valves manufactured before 2003)

GFB Standard Replacement DV+ Plunger - 6121

GFB Standard Replacement DV+ Plunger

GFB Standard Replacement Trumpet - 6110

GFB Standard Replacement Trumpet

GFB SV52 High Flow BOV - Rated at Over 300psi (Suits All High Powered Turbo or Supercharged Engines) - T9052

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...

GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid) - 5701

The 5701 can be used in place of the standard trumpet on GFB valves (Part numbers T9003 & T9503), and will make a whistling sound. However, it is necessary to run the valve so that all (or most) of...

GFB Whistling Trumpet (suits all valves) - 5702

The 5702 can be used in place of the standard trumpet on all GFB valves, and will make the whistling sound more readily than the 5701 (high boost and RPM is required to get the whistle from a 5701),...