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The Hybrid Is Back! Celebrating 20 Years Since The World’s First Dual Outlet Blow-off Valve. In a time before Justin Bieber, Y2K, and even Google, the year is 1998 and GFB’s founding engineer John Adrian is so sick of his new WRX stalling with an...

Hybrid Dual Port BOV Three valves in one! The GFB Hybrid T9214 is a direct bolt on dual port BOV for Hyundai’s new “Smartstream” engines, found in the I30 N-Line Sedan, Sonata N-Line, and Kona N-Line (check vehicle applications below for full details). Featuring...

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...

RESPONS TMS : SMARTER THAN A DUAL PORT BLOW OFF VALVE Atmosphere Venting BOV Won’t Work On Your Car? Try A GFB Respons – You’ll Be Surprised! Just another dual-port BOV? On the surface, it may look like just another dual-port blow-off valve, but...

Atmosphere Venting BOV Won’t Work On Your Car? Try A GFB Respons – You’ll Be Surprised! Just another dual-port BOV? On the surface, it may look like just another dual-port blow-off valve, but the Respons is actually much more than that. Featuring GFB’s patented...