There's a Hypermax shop near my work and I have seen a few trucks that were modified by them. One was an Excursion Limited that supposedly has about 300 hp and 600-650 lb/ft torque. Hypermax will install bigger injectors, crank up the boost, larger exhaust(the Excursion had a 5-6" piping system
), power chips, etc... I haven't driven any of their modified trucks, but even stock ones can get moving rather quickly for such heavy trucks. The 6-speed stick 250's and 350's are slower because it takes longer to shift, but the automatics are very impressive.
