i never did this but a good way to see if the turbo is blowing oil is first to..... unclamp the intercooler pipes and check for oil at the intercooler.....

i doubt youll find any but its a good start.....on narrowing in on the turbo.

checkinging the downpipe will just tell you if its burning oil....



i think what your seeing is a bit of blow by to be honest....i got a welder and we could easily fab up a nice setup for that beast if you like. i want you to be happy with the car just as much if not more than i was.