You do not connect the blow off valve to the intake, you connect it to the cold side pipe between the inter cooler and the throttle body. You need to buy either an adapter flange (SHITTY) or a new cold side pipe (agpturbo.com) and mount it to that. Agp can have whatever flange you may want on their pipe. You then tap into the throttle body vacuum line and connect it to the back of the blow off valve. Very easy to do.