Hi, my name is Thomas. I'm new to HP Tuners and I have been working on the 0411 swap in my 98 2500 7.4L for about 4 months now off and on. I have checked and rechecked my wiring until I'm blue in the face. I've come to the conclusion that I'm doing something wrong in the programming. I have tried 3 pcms now, 1 used and 2 from Oreillys. I am reading the file from pcm, opening compare file for 02 express stock tune, opening compare log, right clicking, copy over all differences, then I close compare file, then I'm turning off VATs, gen codes, then I'm writing entire. I have licensed the pcm and the tune file from the repository. My truck only runs if I give it throttle and it runs like the firing order is off but I've checked in the file and it shows to be 18436572 for the firing order and it doesn't run any different if I change the firing order back to the 5.3 firing order and back again manually. I can wire my black box pcm back in and the truck runs fine. PLEASE, someone tell me what I'm doing wrong in programming. I'm starting to think I was sent a bad MPVI2 unit. Also, I am going off the wiring I got from Lex Tech (Jeff). Thank you in advance.