If you have a CAI and exhaust that involves the "y" pipe or the catalytic converters then yes. Anything past that doesn't matter.But it also doesn't hurt to add stuff even if it doesn't have any effect on the tune. If you dont know what something means but know you havent done anything that will mess with it just leave that box blank.
The pcm hex code is the basic calibration code to how the truck is run like shifting and fueling strategies.
If it doesn't let you type anything into the boxes try downloading/updating your Adobe reader and try again. It also doesn't hurt to trash the current copy and download a new one if you still have trouble.
Dont worry, you should see some of my original posts and questions.
