The VR11 suits the BMW M2 and X4 M40i with N55 engines. If you are looking for a Kompact EM unit for other N55 engined vehicle, please lookup the VR9 product. 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 minimising 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 utilise 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. Key Features Include: Patent pending integrated pressure control True plug and play upgrade Integrated proprietary high-temperature solenoid valve Billet construction with high-temperature o-rings Available in plumb back or dual port options