Yes you can do this. However blowby and valve seal leakage can and does pressure crankcases esp turboed . It is why you will find large multi hose -10 12 AN hose sytems on HO/racing IMSA cars to help evacuate and avoid pressurizing.

I use 2 catch cans. one on the turbo inlet with one way pcv valve to avoid pressure spikes coming back to the valve cover during back fires etc. Empty the catch frequently. 2 time a month. I DO not see oil in it 100 % water vapour only. 25 psi tapering to 23-22

PS the turbo pulls one hell of a lot of air under load and that includes from the front breather hose.....bigger is better as long as you trap any oil..dont want that to get to the cylinders and up the temps we all recognize that

My other can is on the pcv from the intake manifold. This operates in low load to pull oil vapours and burn blow by as well. Lowers overall emissions venting and keeps the crank case cleaner.... shuts to stop pressurizing.

This one i dump about 1 a month and i get about 90% water 10% oil. IIRc that is because of the location of the pcv valve and the oil near the front of the head.

Yes you can eliminate the pcv. I use them and breather tanks Why not keep the engine crank case cleaner and more compliant ?

 

The 3rd party PCV valves blow. I've tested them, and they all leak badly. The OEM PCV valve is great though. Seals up perfectly in my testing. Clean it and reuse it, or go with an inline check valve in the hose. One thing to watch with the inline check valves is that the crack pressure for most of the inline check valves is too high. You want one that has a crack pressure of no more than 0.3 psi.

 

I use stock PCV going from the back of the head to the catch-can, then from catch-can to intake manifold I use this PCV: http://www.usplastic.com/catalog/item.aspx?itemid=23369, so I don't pressurize the catch-can during positive pressure inside the mani.