update your profile... how many miles on your turbos? Could be turbo seal, but before you go there pull the balance tube and look/feel for oil in the upper plenum. Boost also means high air flow - if you've got oil in the upper plenum that is when you will suck the oil into the cylinders. these cars are notorious for poor oil control especially on hard cornering. A new pcv might help, otherwise an oil catch can and make sure not to overfill crankcase.