Update! I had a little time today to mess with the mustang, and I got it cranking but not firing over. From what a friend and I have concluded that it's the PATS. I got two keys and 2 PATS antennas; one key works and the other is for looks. After trying a security reset, you know leaving the key turned to acc. we finally got it to at least try to start but no luck That starter will run all day if I wanted but it won't actually fire over. We did our fair share of digging thru wires and checking fuses but no luck on that front either. From what I gathered in other forums, it will need a tune to disable. My honest question is where I find said tune and how would I go about flashing it to the ecu. I guess what I'm asking is what's a good software or how do I flash an ecu? I know this is confusing topic and wording, but I have no idea. My issue yeah, I could pay someone else do it, but I want to learn how. I know that makes no sense, but I really just want the experience and the knowledge. So just bear with me on this and no I don't have to be the one to do this, but the challenge would be nice. As always, any help would be greatly appreciated