I am aware that the vent that comes out of the side of the valve cover (that goes to the throttle body) needs to be redirected to the intake, pre- turbo, to maintain vacuum under boost. It seems as though the same would apply to the pcv valve (on the back of the valve cover, to the intake manifold), but most people just leave it.
what do you guys think?

the pcv valve stays.
its a one way valve.