The award-winning Kompact EM series Blow-Off Valves, are the world's first truly plug and play Blow-Off Valves. Simply unplug and unbolt your OEM Blow-Off Valve, and install ours in its place. No adapters, hoses or extra assembly required. All this while retaining complete OE control of the BOV's operation. Turbocharger performance is increased due to minimizing leakage, rapid response, coupled with superior thermal performance thanks to our world-leading engineering and simulation abilities. A must-have for hybrid or larger flowing turbos that utilize OE electronic diverter valve by not leaking, the EM will achieve target boost without stressing the turbo charger and wastegate Dual Port vents both to the atmosphere and back into the air intake.Kompact EM BOV VR11 Dual Port