Hello I have a 05 6.0 with 198k, I just got her back today from my buddy's shop! She has a brand new powermaxx! Today I noticed at a red light that my truck was just hazing out black smoke at idle! I don't have any check engine lights or anything to that matter! Everyone I start it, it blows a pretty big cloud of smoke and slowly calms down to a haze of smoke out the tailpipe! Idk if this is a normal thing for when you first get a new turbo. I have no clue so if someone could give me some input that would be nice