So this may be somewhat of a pointless thread since I know what most of the answers will be. But I want to know if you guys with chips, especially TW, DP, etc., noticed a significant difference when you got the chip. Mostly a throw you back in your seat difference. Some background info: my truck is an early 99 with intake, exhaust, 10k mod, and according to the previous owner a "built tranny". I have a friend with an 00 with intake, exhaust, suncoast tranny, and a 140hp chip. When I ride in his truck I don't notice much of a difference at all in the feel compared to my truck. Neither of us have run our trucks to get times or anything and we haven't raced eachother, but when I ride in his truck I am fairly disappointed. I guess I am just asking for some reassurance since I am planning on buying my chip this week. And it's got me thinking a bit so I'm going to go out and make sure the PCM doesn't have a chip sitting in it.