You'll be fine to run the higher horsepower tunes with your stock setup. You may very well encounter some low injection control pressure though. Although this will not harm the truck, it does leave some performance on the table. Fuel wise, you won't be making enough power to even worry about the supply side of the fuel system.
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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