I always run PCV systems as they come from the factory, no harm done. When I turbo the car, I just relocate the fresh air vents to pre-turbo how they come on factory turbo cars.
The oil going through the intake is extremely minimal. It builds up a thin residue inside the piping, but its never slowed my car down or caused a failure. I never really understood all the stress over catching it in a can and all the hoses all over the place. But I wouldn't eliminate the setup either.
The way the BP turbo kit has you do it makes plenty of sense since the turbo inlet is rather far away from that point.
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