I recently bought a 2008 6.4 f350 with a spartan tuner on it. Six days later the truck wouldn't start. I reset the tune and everything worked fine for a few more days. Started the truck again and wouldn't start. Codes were showing the DPF wasn't deleted and changed tunes to 210 with the DPF delete. Two days later it cut out again with no codes showing. Have any suggestions what this could be?

 

look under the truck and see if the DPF is on are off. you better hope it's off because running a tune for a DPF on and it's off F up your engine