The award-winning Kompact EM series of retrofit blow-off valves is the world's first true plug-and-playupgrade solution for your factory recirculation valve. Remove the connector and unscrew your OEM valve, and use the Kompact EM valve in its place. No adapters, hoses or additional mounting are required. The Kompact EM valve series from Turbosmart uses motorsports proven billet valve technology and adds a patented solenoid system and internal pressure control channels for a simple plug and play valve with full OE integration and control. There are no reference hoses, no separate solenoids, and no complicated parts - just bolt it on and plug it in! You can count on unmatched performance and reliability as a direct replacement for your factory recirculation valve. The Kompact EM valves avoid the common failures associated with plastic factory valves with the boost balance valve design (the more charge you have, the better it seals), positive seal o-ring on the piston face, and billet construction. Regardless of your application, the Compact EM Series will hold more charge pressure and respond better in any environment. Features Boost balance valve technology Patented integrated pressure control True plug & play upgrade Integrated patented high temperature solenoid valve Billet design with high temperature O-rings Installation Available as plumback or dual port options Suitable for newer VAG vehicles such as the Mk8 Golf GTI, Audi S4 and Audi SQ5!