EVO 8 & 9 Go Fast Bits Respons TMS Adjustable Bias Venting Diverter Blow Off Valve

Respons TMS Adjustable Bias Venting Diverter Blow Off Valve (T9033) by GFB®. 33mm Inlet x 33mm Outlet. 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 venting bias adjustment system, the Respons allows you to precisely control how much air vents from each of the two outlets.