GFB Hyundai i20N 1.6T BOV Blow Off Valve

Option: Mach 2 DV
Sale price$201.00 USD


Mach 2 TMS Recirculating Only (no vent noise)Hybrid Dual Outlet Valve (non adjustable vent)Response TMS (fully adjustable venting)Deceptor Pro 2 - Electronic adjustment in cabin control.


We recommend the Response TMS Direct Fit Blow Off Valve (BOV), with Patented Sound Adjustment System




Give Hyundai The Sound You Want, And The Performance To Go With It!

The Respons TMS valves take the Hybrid dual-outlet concept a step further, featuring our patented Sound Adjustment System. This unique feature allows you to infinitely vary how much air is recirculated or vented to atmosphere, like a volume control. Simply by twisting the adjustment ring, you can change the sound of your BOV from silent to ear-shattering, or anywhere in between.


With over 20 years in the business of designing and manufacturing bypass and blow-off valves, GFB have learned a thing or two about managing boosted air, as well as the difference between a good blow-off valve, and a great one! Quality and performance are built into all GFB valves, which is why these products are backed by a lifetime warranty and offer the best possible throttle response and boost holding that any bypass or blow-off valve could deliver.


Unbeatable quality, direct bolt-on fit, exclusive sound adjustment system, lifetime warranty, AND a performance benefit – that’s what we mean by:



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