The pcv system isn't activated by vacuum and it is not metered or filtered. The pcv setup is opened/activated how ever you wanna describe, by good ol manual positive crank pressure which is constantly happening, not just when boosting or driving. The piston moving up and down causes pressure on both sides of the piston, this is the actual pressure it is trying to relieve is the pressure caused from the piston moving up and down so a malfunctioning, seized or clogged pcv valve is bad. A pcv system on a naturally aspirated engine helps rev the engine quicker by using the engines vacuum to pull this pressure from the crankcase alleviating the pressure below the piston. Big Turbo cars have a pcv system but the turbo helps rev the engine, and the excess pressure usually goes to a vented catch can not the intake track to prevent oil from getting in the intake track. If you plan on riding on a 11.5-11.8 a/f you might want to vent or reroute the pcv system to an oil catch can, nobody wants to lean out or detonate. A stock dd why deal with the hassle, just regularly check and replace your pcv valves.
