Crankcase pressure??
 

Could not having a catch can on a ls-t and the pcv still hooked up to the IM cause the crankcase pressure to send oil back into my turbo. I check my inlet and return and they are both good, but the exhaust seal is starting to leak right next to the return. The turbo is only 2 months old.

Re: Crankcase pressure??
 

That could very well be one of the problems. First thing that came to my mind is you probably, well you do have to much oil pressure going to your turbo, you only need about 10-20 psi for your turbo to spin effieciently. I would suggest running an oil restrictor inline with your feed line. you can pick one up at ---------------------------, last time i check it was $14 shipped. As far as the catch can, i would get one installed asap, theres a write up on how to set up your pcv system that was done recently, that should help you out. Good luck

Re: Crankcase pressure??
 

if you left your pcv stock, that would be the reason if you're burning oil, I wouldnt even drive it like that, search for another way to vent that ----. I'll post a setup up tonight.