AutoEnginuity won't fix his EGR issue. That has to be done with something that can flash the trucks computer. To my knowledge, it can tweak certain parameters within each of the 9 modules on our truck, but it can't disable the EGR system, except I think for a short amount of time to test things, but once you disconnect the connection it reverts back to whatever the programming on the computer is.

Now for code readings, re-calibrating the speedo and a plethora of other options, AE is the best.