Re: Passenger side pcv delete help (searched)
Proper PCV is required, not only to remove the moisture and pressure, but to help pull fuel vapors that collect in the crankcase, which dillutes the oil over time. I have replaced more than a handful of front and rear main seals that have blown out due to frozen PCV valves, so the possibility of seal failure is real enough.
When you are under boost, the PCV valve is closed to help prevent pressurization of the crankcase. This leaves the vents as the only way to relieve crankcase pressure. On the typical closed systems, there is a slight vacuum in the intake tract to help evacuate the gases into the intake (prior to the throttlebody-not manifold vacuum). This tends to coat the throttlebody plates, intake and back of the intake valves. Really bad blowby through the intake also reduces the octane rating of your fuel, increasing detonation thresholds.
If crankcase pressure under boost is a problem, running improved venting is necessary if you aren't going to add a vacuum pump. Putting vacuum pumps on allows for a negative pressure to be applied to the crankcase during boost, helping to evacuate the system much better than just through a vent.
If you are interested in the crankcase pressure, you can always plumb a pressure sensor (even a MAP sensor) onto the dipstick or such to measure any buildup.