Hmm swap out to a good MAF or get yours tested, I believe sunpro has a old tester you could find on ebay, if anything get the translator and LT1/LS1/LS6 etc MAF much better. If its white smoke , it could be turbo seal or you MAY luck out and have a pressized block. The PCV valve or valve cover breather is soak with oil, it will build up your oil PSI high enough to push oil out seals, turbo being a weak one already. get back to me after MAF check or cleaning(dont descreen it !!!)