The problem is that I havent found a oil separator that works... some are better than others but till now all of them let a bit of oil go thru... I totally agree with you on the crankcase vacuum adds horsepower thats why drag racers, nascar and others use this... specially on dry sump systems but its not practical to run a vacuum pump on a street car, it seems to be tha nature of the engine , I used to run a pcv on push rod 302's back in the days with no problems but these now engines have so many moving parts... add rpms and you have the oil mist that we are all trying to keep out of our intakes...