I co-worker had his car, 2002 corvette with heads, cam, and headers dyno tuned by a very known tuner. He drove the car several hundred miles to his shop. It ran fine on the dyno, and started and idled with no problems. Now a couple hundred miles later the car dies when you start it. If you keep it running by giving it gas it will idle after awhile. It does this evertime you start the car no matter if the car is cold or hot. Once its running it drives good but it will also die once you come up to a light after driving at speed. It did none of this the day it was tuned or for the couple hundred mile drive home, it even got 30mpg. Any ideas?