I recently bought an SCT Programmer, and programmed my truck to Perfomance Mod, I haven't gotten a Cold Air Intake yet, Nor have I deleted the DPF, Programmer said I wouldn't need to, but others said I need to. I have an appointment to delete the DPF in about a week. Yesterday morning on my way to work, I was running about 75-80 on the interstate and it was running fine, and then all of a sudden I lost power, pushing gas pedal, and nothing. I was able to get it off the interstate on an exit ramp. Had No warning lights or alarms, or check engine lights. Tried to start it back up, and it would start but made a bad noise, so I shut it back down and went onto work. At work some others guys I work with that have diesels said it sounded like Fuel Filters. I haven't replaced them yet, so I thought maybe. I went after work and got 2 fuel filters, and replaced them, and did what it said about priming them. When I started the truck, it was same thing, loud noises, rough idle. I'm looking for answers... Had the truck towed to my house, I guess I'm gonna have to take it to Ford Dealership, which I don't want to cause I know they're gonna get me good, even if it's something simple. Is there anything simple about this? This is my 1st diesel, and I'm learning like alot of others here I see. Please Help. If it's something I can do myself, I would rather do that. Thanks in advance for any help...