Unplug egr? Shut key off, remove plug. Start, drive, enjoy. Do it, then you tell me how it runs.
if your truck is an 03/04 you can unplug the EGR w/out setting off a CEL, if it is a california model, or an 05up truck, you will get CEL ..
you can disable the EGR function w/SCT tuning (preferred), but if you want to unplug it , here's the Proper way:
truck must be COLD, the preferrable way to unplug the egr, is to do it first thing in the morning when the truck is at it's coldest. Turn the key "ON", but do not start it... let the computer come online, and read all the sensors, and it will make sure the EGR valve is in the CLOSED position if it isn't already..
then turn the key off, and unplug the EGR valve (just behind the intake elbow) however this does NOT keep hot exhaust gas from entering the egr cooler and now you will have hot gasses trying to flash boil the coolant in your egr cooler. you may or may not notice any increase in performance, some do, some don't...
mine seemed to actually idle quite a bit louder when i had mine unplugged, and it negatively affected my MPG.. i have since totally changed my entire setup, and i no longer have any egr function at all, but if you are going to try it, that's the way to do it.
hope this helps.