Hey everyone, Been following this forum for a while, this is my first post. I’m sure this topic has come up before but I just want to see if there’s any new info on it. I’m going to be getting a 5” exhaust for my 00 7.3. I know I’ll be getting some lag from the lack of hp in my truck but I...

Been hunting for this for 1K or so miles. '06 6.0 ton 4x4 85K miles. After low speed driving (25 - 40) especially in town and especially if a hilly town, a low roar will appear from what seems like driveline and continue regardless of speed until I stop the truck and immediately before coming to...