I have an automatic 2000 Gt. It has 3.73 gears, cold air intake, pulleys, Mac pro chamber H Pipe, Flowmaster mufflers, and a Diablo Chip installed. The chip was the last thing that I did. After I had the chip burned for my mods, when I floor it at the track I always hit the rev limiter. Before I had the chip installed, I never had this problem. My car runs good, and If I give it about 3/4ths gas it will shift fine. But when I do that, I know that the car is not running its best. There is no way that I can floor it, without redlining. Has anyone had this problem? Thanks in advance.