I drove my friends 96GT and my own and his car feels way more responsive. In my when u hit the gas it has a slight delay before u feel it go while in his you lightly touch the gas and the car goes..He has mac intake, steeda T/A and the pi head swap in his car, but I dont think that would make that much of a difference...could it be that for the later years the program is a little rich? or do i not know what im talkin about