Hi all, I have a 2003 wrx sti type uk ppp (stock).
The problem i have is that the car starts up fine, I will drive for a few minutes then when i get stopped at lights the car starts smoking out the exhaust, about 5 minutes after the engine gets up to temp the issue dissapears. I have noticed a slight loss of power and there is no smoke before or after. Any help would be greatly appreciated.

 

your turbo has gone my friend

 

Could be, could also be rings failing, or valve stem oil seals...once they get hot and expand they seal again?

Get turbo looked at and compression tested.