regardless of that. it wasnt doing it before. 3 pound is f**k all more boost. and its not the oil return. the factory isnt idiots.
i agree theres oil up top. but whats making it "blow out"? corner g-forces i think not.
also. what turbo is on it????? this may sound strange but with my gtr i thought i stuffed the engine when it took aprox 5-10 mins of full boost driving to cover my engine bay and guards in oil after filling up the catchtank.(they were out of a blown motor with spun bearings)
the problem? worn out turbo thrust bearings. it seems boost was leaking past the bearings in the turbo,presurising the crankcase and blowing it out the breathers.
new turbo=fixed.
worth a look at. if you have a smoke tester or make up a adapter to presurise the inlet tract befor the throttle body to see if t is thr turbo leaking.
if not. do a leakdown test.
also a long shot. has any part of the sump changed?? of the windage trays not been installed??