Originally posted by iamchappy
I am currently fabricating my new intake for my 914 Turbo project. While test fitting where vacuum hoses are going to be located above and below the throttle body I started to wonder if when the AAR is warmed up and fully closed does it seal up well enough to prevent boost pressure from leaking past it.
Another thing should I let the AAR upper hose connnection vent to atmosphere or air cleaner, or could I attach it to the charged air intake pipe above the throttle body.
David, Connect the AAR line to the back of the TB above the plate or anywhere on the charged air intake. This way the pressure is always equalized under boost and there is no need to worry about any leak thur it and past the plate.
When lifting off the throttle, the BOV will react and you still won't get any leak. Same for AAV plumbing.