Next question: why are there so many holes in this block? I have two in each valve cover and two in the block. My donor came with a catch can (in and out) so I get to figure out how I want to route everything. I've seen a bunch of alternate competing methods on subie forums, so let me ask what happens if I do it like this?
PCV.jpg
grey blob in the upper left is the catch can
grey rectangle is the turbo inlet soft pipe
black circles are vent tubes
blue blobs are hoses
green thing is the pcv valve
"X" means "cap this off"
Seems like this would only take "cleaned" air directly back into the intake manifold except under boost when it would go back to the intake (which I still don't like, but hey, never used a catch can before so maybe I'll be surprised).
What are the down sides of setting it up like the picture?
Thanks for this, too.