Smoke Problem

[Stewart]

I have the occasional smoke problem at start up but this is more serious. I track the car a PCA DE events and sometimes after a hard turn, I get a tremendous puff of blue white smoke from the exhaust. If I run hard enough to get the PSM to kick in, the problem gets worse. I was black flagged once. This has also caused a sensor to fail and I get the check engine light. The car is fine and still runs great even with the light on.

Any help would be greatly appreciated.

2003 Boxster S