I am having major problems with my car. I just got my car back from the body shop, because of some dents that where fixed cause by a bull that dented up my car. All the dents where to the front and rear quarter panels on both the passenger and driver side, and the front doors on both. I gave the car to them and it worked perfectly fine and when i got it back there is no power and it seams that the turbo is not engaging or even working. Every so often driving it it will lurch forward and back like the turbo is trying to engage. I was wondering if anyone can put some light to this problem, or suggest a possible fix. If i didn't provide enough info please let me know and i will post more asap.