You seem very knowledgeable in ford power strokes I would be excited if you could help me figure out my 6.0s issue I have an 04 iv had it for close to a year and have had 0 issue other then it struggling to start on a cold start , solved the issue with just plugging it in. Recently I had an issue where at low speed the truck would act like it's missing and hesitate but as soon as it got over 30kms it smoothed out. I drove it for an hour and it started again but at 80kms I pulled over turned it off and back on and normal again. There is no black smoke and no white smoke I changed filters I checked oil and it's fine I checked fuses for anything with fuel and they are good. Only thing that's modified is it has a cold air intake and the exhaust was cut off so it's straight piped