Thread: Help with PCV for turbo setup

Ok thanks for the reply. Could I tap the old pcv location (vacuum is blocked) and use that instead of my front valve cover? And route that through my catch can and then to my air filter before turbo? Using series 3 upper and lower intake.

Originally Posted by 94GrandPrixSE

Ok thanks for the reply. Could I tap the old pcv location (vacuum is blocked) and use that instead of my front valve cover? And route that through my catch can and then to my air filter before turbo? Using series 3 upper and lower intake.

nononononononon don't do that! The heads and routing has to be on separate heads. Since you have the L26 upper, your intake head isn't your front head like L67, it's your rear head. Your front head is actually the exhaust route. You can keep your stock location just fine for your pcv and just re-route the map sensor like I did and plug the little hole inside that goes to vacuum and route an elbow out the original map sensor location and route that to your catch can to your check valve to vacuum. Using that, your options for the intake are to either to tap the rear valve cover and bring that to before your turbo, or to tap into the stock intake location and route that through a catch can to before your turbo intake. If you have L36 plastic intake, you'll have to plug the stock pcv intake at either where the throttle body attaches to the manifold and drill and tap somehow into the internal routing to bypass, or if you're using the L26 aluminum upper, all you have to do is bring the stovepipe intake hose out to before your turbo intake. Aluminum intake is really the way to go here. That being said, again, you can tap the rear head for air intake, just make sure you have baffling and check your valve clearance!