Hypertech Power Programmer 3 chip for a 01 ford 7.3. I'm not sure how much horsepower it is, but you can change the shift points, firmness for the shifts, rev limiter, corrects for oversized tires and top speed limiter. my dad had it in his truck but he traded it in so he took it out. he said he could tell the most with it when he was pulling a trailer.
$175
