I have a b16 on 15 PSI, built bottom end. Compression in fine. When I turn real hard and only at that time, a ton of white smoke comes from the exhaust. If I continue to drive straight it will stop. I have rebuilt the turbo, but it does it even if I disconnect the turbo. I have pulled 20 dynos run in a row and never any smoke, only when I turn hard. I use this car in autocross. Some one said something about pulling vaccum from the master cylinder. I just changed over to rear disc with a new proportioning valve.

 

Sounds like a PCV hose sucking up a lot of oil to me. I don't know why there would be so much oil in the valve cover though. Does it do it when you're on boost too?

 

No, generally when I'm cornering I have the clutch in. I would think if it where a vaccum problem it would be worse under high boost or when I let off quickly.