Welcome to the world of SD. Land of myth and legend.
Gears, Hiflow cats or off road, exhaust, underdrives, electic fan, cold air induction, bumped timing, tuneup. The SD cars respond very well to the little stuff, not to mention as a general rule you can expect a SD car to outrun the best MAF car by 2-3 tenths when bone stock. The computer in the SD car hasn't been subjected to Ford's crazed notion of detuning, they didn't figure that stuff out until later. LOL.
Contrary to popular belief, the addition of an adjustable fuel pressure regulator can allow a SD car to accept heads/cam/intake combos. Just tune the fuel pressure to trick the computer.
