EVO 8 & 9 Go Fast Bits Deceptor Pro II Bias Venting Diverter Blow Off Valve

Deceptor Pro II Bias Venting Diverter Blow Off Valve (T9533) by GFB®. 33mm Inlet / Outlet. Adjust your Blow Off Valve venting bias electronically on-the-fly. Revised porting to optimise flow and venting bias. Compact design fits in most factory valve locations. Direct bolt on for many vehicles. New bore finishing process ensures a lifetime of reliable operation.