2006 f250 will not start again, any suggestions?

[helio]

The first time my truck would not start is because I had the bully dog try before you buy installed prior to the predator. Had the pcm replaced under warranty. Several months later I call diablo, have my predator reset and they assure me nothing is going to go wrong this time. I install the 100hp tune and it works fine, I uninstall it that night and it works fine. The next day I go and start my truck for a couple minutes to warm it up. I go to install the 100hp tune, everything looks to work fine, but then I try to start and it starts for half a second and dies, I try it 5 times and the same thing happens. I put my truck back to factory and the same thing keeps happening. Turns over, sounds like it fires up, then dies immediately without idling. any suggestions? I am really pissed, and thought about taping the tuner to the bumper and pushing the truck down my hill into a tree. I have to finish a job tomorrow and this truck is my life line. Please help if you can.

[concoursd]

If you restored the original backup and the issue persists than there is probably something else wrong.

[SCGt94]

any codes/lights? That's what it sounds like to me too^

[helio]

Well, after getting towed in for the second time, the ford dealership called and said that there was an internal short in the pcm and asked if I had installed a tuner of some sort because they can't figure out how it happened a second time to the same truck. This makes 2 pcm's fried by the predator. So is this a common thing with these trucks, or is it common for this tuner or what? Is my tuner bad? I have it on ebay, but don't want to sell someone a P.O.S. that is going to break their truck. Needless to say I am pretty disappointed with the product and how you keep saying it is not the tuner, I have had no problems with the truck except for the 2 times I have plugged this thing in and resulted in a shorted pcm. So what do I do with this tuner???

[jseiber]

Tuner Fried my pcm a couple months ago. I,v not even tried to reinstall it sence i got the truck back for fear it will happen again.
I,ll probly just make a $400.00 paper weight out of it and go with a differant tuner.

[helio]

I wish I would have not tried to reinstall it either, I guess that is ignorance on my part, and diablosport assuring me that it doesn't cause such problems. They need a disclaimer saying it could leave you stranded. I am lucky that ford is covering a second PCM, my warranty runs out soon. Do you think another type of tuner is safe?