For those that remember 2 or 3 weeks ago my exhaust over heated during regen and told me to "Stop Safely Now". So I had reprogramed my truck to stock. I finally went through another regen on thursday night, so friday I put back my extreme tune. The truck would start but die. Having to go to class I put it back to stock again. I tried to reprogram it to the performance setting and it did the same thing. Start but would not stay running. I have the latest firmware and revisions and it never did this before. The truck had the extreme setting on it for 4500 miles before the incident. Has anyone heard of this problem or experienced it yet??