Dude I wonder if thats the problem with my truck. Mine only has a problem when the battery dies as well! Imma try it when I do my cam swap! If you just fixed my truck Ill actualy owe you guys one. Even though I am kinda stealing your thread. My friends always blaimed the tune... I always blaimed it on a bad ecu. But it would make sense if that was the real problem being how well it runs after it relearns the "adaptations" it takes to run.