I just experienced this problem too. I have had the car for a couple of months and the tires needed replaced so I thought I'd do a couple a burnouts to see what the car could do. After this the car didn't even want to go. I'd push the pedal to the floor and the car would just creep on the line. I got the car home, checked the forum and did the TB reset mentioned in this thread and it seems to have worked. My question is why after some hard acceleration does the car do this?