’99-03 7.3L POWER STROKE
MAX HORSEPOWER: 300-320 HP
TUNING: CUSTOM-TUNED POWER HUNGRY PERFORMANCE HYDRA CHIP OR TS PERFORMANCE 6-POSITION CHIP
Thanks to larger injectors (130cc on early ’99s and 140cc from ’99.5-03), a more efficient 17-degree high-pressure oil pump (except for early ’99 models, which still had the carryover 15-degree HPOP), and an electric lift pump supplying more fuel pressure to the injectors, the ’99-03 version of the 7.3L makes considerably more power than the old-body-style Fords with just a tune. Depending on the model year, Super Duty trucks from this era laid down 190 to 210 rwhp in stock form. Well-tuned early ’99 trucks typically make 290 to 300 hp, while later models usually make anywhere from 300 to 320 hp (and we’ve even seen one clear 330 hp).