you'll get blow by no matter what. i have no oil in my turbo since i look sometimes so that means no oil is getting in there via the valve covers or crank case vents. however i was getting oil in my intake manifold from the crank case vent where it splits off a T going into the PVC valve. since im blow through i capped off my intake manifold and no longer run a PVC valve. that means the oil that was going to the IM can now go to the inlet then turbo then pipe ect ect. so i put in a catch can. used clear hose so i could see if oil is getting to the inlet but so far so good. its not a bad idea. at least do the crank case vent to catch can then back to the T going to the inlet and your PVC.
Scott-2011 WRX 335HP 394TQ 93 VF52!
Last edited by synolimit; 05-19-2010 at 01:32 PM.