So I have been trying to chase this down for a while and it seems to have gotten worse. When the car starts up I am getting a lot of oil smoke and also when I stop at lights. Also when on the highway and I lift off the throttle I can smell the oil coming out the exhaust. I have checked the PCV valve. It doesn't really smoke under boost, so I didn't think it could be the turbo, could it? The car is a single turbo with all the emissions removed. Any ideas?

 

Does your single have an oil line plumbed to it? If so, do you know if there is a restrictor in the line?

Another thing to check is to start the car with the oil cap open. If you don't get any smoke, then it's a crankcase ventilation problem. Where is your crankcase being ventilated now?

 

Yes it does. Not sure of the restrictor, but it has been on the car for about 4 years the way it sits now. I haven't changed anything with the turbo setup..

 

The crank is being vented. The cap on the filler neck is open.

 

i've had the same problem for over a year at first I thought it was the turbo. but now that i'm reading this...

 

Maybe it is the turbo. Mine has seen years of abuse (26lbs every outing) but I thought bad turbos smoked under boost.

 

Its definitely blowing a quite a bit of smoke. I wouldn't think its the turbo either, but maybe the turbo is heating up when you are in boost and it is expanding and sealing? When it cools off a bit, the seals start to leak again? I don't know, just thinking out loud.