IMO its a PITA unless you have a full garage with a lift. Im no stranger to wrenching and love doing my own work but i didnt even try. Too much crap involved, for me anyways. A lot of guys have done it in their home garage with success. It all depends on your tool stash and abilities.
Egr delete for dummies = look at the motor and think real hard if you wanna try and get down in the valley. Then look again at all the **** that needs to be removed and put back together. Then decide. Lol