I just bought a C70 and noticed smoke coming out of the tailpipe, I took it to the dealer and they told me that it was due to a worn out turbo, can the turbo be rebuilt? how much? is it cheaper to buy a rebuilt one and swap than trying to rebuilt mine? do I have to take it off the car or I take the car to the turbo shop and they take it off? I live in Dallas, Tx
Any help is appreciated.

 

Think people would need more info.
Whats the mileage?
What color is the smoke?
Any noise coming from under the hood?