[88Racing]

Here's a copied part of the website decription:
In addition, if you have a stock or mildly modded truck, you can replace one, two, or all three canned tunes with the calibrations of your choice:

· STOCK CALIBRATION
· FUEL-SIPPER™
· 25HP HEAVY TOW
· 40HP MODERATE TOW
· 65HP STANDARD TOW
· 80HP PERFORMANCE
· 100HP RACE
· 120HP RACE
· 140HP EXTREME

Other power level combinations are available - just ask!

Quite typically you will only see approx +75hp out of a stock 7.3.
Unless you do some of the mods listed below.

Heavily modified trucks will require custom tuning at an additional charge of $30 per file.* Heavy Modifications include: *Injectors, Big Oil (dual HPOP), Large Single or Twin Turbos, Power Adders (i.e., nitrous, propane, water/meth injection), and Modified Transmissions.