I’ll just leave this here...
North Texas. Step son got pulled over for illegal window tint on windshield. Troopers first words were “your truck small dereted, is it?” He acted stupid and said it was like that when he bought it. Cop asked him to show him where the D-P-F filter was, so he played dumb again and said he didn’t even know what that was...lol. Cop was a huge douche and wrote him tickets for his front door windows being 21% vs 25%, then wrote him warnings for the emissions including not having a muffler which he has.
2013 D-max Denali.
His doesn’t sound any different than stock until you get on it, doesn’t smoke a bit, and doesn’t smell.
Mine stinks! Guess I’ll turn mine off when I get pulled over...