Check the tuning forum for details on what readings should be where. It's going to be a lot more in-depth than just "A should be 7, B should be 250, C should be 1000". Different trucks seem to work well with different numbers even. One of the biggest things is knock retard, and you want that as close to 0 as possible. After that, there's a million things you can check with DM, from making sure the TPS is at 100% at WOT to making sure your TCC is being told to lock up and your A/C clutch is disengaging. I don't know much mechanic-wise, so all I can tell you is knock is bad!!!
P.S. !!!!!!