I need same help with that.
When the car stays idle for about 4-5 minutes then i have white smoke from the exhaust.
Is my turbo dying ?

 

White smoke indicates water vapour, check if you're loosing any coolant - if you are then you need to find out how it's getting into the cylinders, possible cause is head gasket.

If the coolant isn't going down any then it's probably just normal vapour from the combustion process, the visibility can change depending on engine temp, mixture etc.

 

Hi Paul.
I am not loosing any coolant and the smoke had the smell from burning oil.
After a full engine rebuilt last year i have replace the head gasket with low compression STI gaskets.
Any other ideas?

 

If it smells oily and its white,then it could be brake fluid from the master cylinder into the servo then into the intake.
Or its actually engine oil (this is more blueish smoke).