Changed ecm still won't start 2005 6.0

[racerorr]

I took my sct off and put a different one on and no start. Put it back stock still no start. It wouldn't turn over it anything. Put a different ecm and it will at least turn over but no start. It will start a different truck. My ecm won't start any other truck. Truck ran great before.

 

[Bad Moose]

I've got nothing. But you may want to post on Powerstroke Army. A lot more activity over there for 6.0l.