Hey guys i have a 04 6.0. Recently i have been noticing that at a stop light my truck will idle really rough and lope pretty bad. When I'm driving highway speeds it goes away ad drives fine though. The truck starts up rough but it always has in the mornings. I can't figure it out... I recently changed the oil and both fuel filters and it went away for a day or two but now its back. The truck is SCT tuned, straight piped and has an AFE intake But I'm sure that doesn't have much to do with it. If someone could help e out that would be perfect.