Always pressure test forced induction setups
https://www.youtube.com/watch?v=w1sb5Y1J068&t=77s
Always measure crankcase pressure at wide open throttle
https://www.youtube.com/watch?v=0oRbfNPnHaI&t=1507s
If you actually do these correctly, an OEM PCV setup for 2jz-gte, sr20det, rb2xdety, LS applications, will function 100% perfect
I've successfully tuned ~250hp/liter these engines, sr20 500rwhp, 2jz 800rwhp, LS apps 1000rwhp, with OEM pcv hoses, lines, routes, for Daily Drivers Street/Strip high mileage setups 200k 300k miles some of them.
LS apps I use the 2jz-gte Supra PCV valve, In my pressure tests the Chevrolet leaks. Sometimes the aftermarket PCV valves for Nissan and Toyota leak as well. You must test the entire plumbing the way I have shown in the video, do not trust the pcv valve without testing it.