I have asked about this before, but finally getting back into trying to solve this. Fresh built turbo engine runs great except when you come to a stop a cloud of oil smoke surrounds the car. I'm wondering if the guy who built the turbo hurt the oil seal? Is there an easy way to diagnose this? I'm also thinking of buying a leak down tester just to insure I didn't break a piston ring (although everything seemed to go together fine and I have no real smoke on accel. Still not sure about PCV possibilities as well. Any helpful diagnostic tips?