Can anyone direct me to a spreadsheet, comparison, or other analysis of the various computer controllers/mods that are available for the Cummins circa 2001 and what they specifically do? The list seems large e. g. blue boxes, plug n plays, van aaken, power max, bully dog and on and on. . Some of these say say they are compatible with others, so they must increase performance differently. Anyone know of a simple spreadsheet (such as increase fuel, advances timing, overrides boost limiter etc. etc. that says what they control and with what are they compatible? So far, all I can tell is that almost everyone loves and recommends what they personally installed. HELP!