when i start my cabby up (s2 rst powered) it smokes for a bit till it warms up. engine was rebuilt at begining of this year and a new turbo was put on. smokes for bout 5-10 mins as soon a temp got to bout 50+ degrees smoke stops. there's no smoke on acceleration or lift off only when engines cold. any ideas being told it could be stem seals.

 

When my turbo was goosed it smoked on start up like u say about urs..
Could be stem oil seals ?

 

what colour is the smoke? you sure it's not just the steam that this cold weather makes all rst's produce?