well my car has been smoking color white from the exhaust with a bad smell sometimes not all the time when the car is at idle, however the car is running fine the turbo seems to be boosting fine.
i recently did a 3"dp and full 3" turbo back exhaust decat and deresonated any comments appreciated. the car has 135k.

 

wait a bit with the new exhaust, if the problem sticks around then maybe id worry

 

well this thing has happened before the exhaust it happens maybe once every week especially after i drive the car hard. the thing is the car is running fast it is the fastest its every ran. do i need to start saving for T3T4 .

 

white smoke means burning coolant. possibly head gasket on its way out. when the engine is cold, take a look at the oil on your dipstick, if you see white streaks in the oil, that means there is coolant in it.

if it only smokes once in a while, just keep an eye on it, but if it starts to do it more often, i'd start planning on replacing the head gasket.