Quote:
Originally Posted by ATL BRZ
I run a Verus Engineering AOS, which services both ends of the PCV system with one can. It comes with an open fitting for the rear PCV port, which I prefer over a soft valve since there is no reason not to let all of the positive crankcase pressure out on a boosted track application, which depending on your build it can be considerable. It's pretty stealthy up in the top left corner of the engine bay and the hoses are all routed under/behind the intake manifold. I have it vented to atmosphere with no pre-turbo vacuum source as doing so before would overwhelm the AOS on track with so much vacuum that it would suck oil into the turbo. So now it's a "catch can" which vents with a longer hose down beside the transmission and points at the ground. It works much better for track use this way and I don't have any liquid oil coming out of the VTA hose, but the can does catch oil as it's supposed to. I have a Fumoto valve on the bottom of the can for easy draining.
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So you're running a hose to the aos from the crankcase breather, another from the pcv (but with a straight through barb fitting), nothing pre turbo, and a long vta hose. How about the intake manifold? Is the intake mani barb capped off and not connected to the can in any way?