Quote:
Originally Posted by mrg666
But one thing is obvious (at least to me) that the compressor (centrifugal or screw) is pressurizing the intake manifold.
|
Correct, but pre-compressor will always be in vacuum. Only post compressor sees positive pressure. Reading the Harrrop installation instructions you have one breather on the intake and the other on the compressor housing. These should both be pre-compressor and thus on the vacuum side of the manifold.