For sale . New blow off valve . ‏ TiAL Q.11BK Q Series Blow Off Valve 50mm BOV Black 11 PSI Spring Aluminum Flange by TiAL Sport . Loud sound, Q series Works with turbo and procharger . Price 1200 SAR . turbo - turbo - intercooler - blowoff valve - procharger - pro charger - procharger - turbo - procharger .