Kind of a different question. I have a factory 2022 f250 with the 7.3L and i am looking for an exhaust. Heres where it gets interesting. It has to be at or below 60db at 50 ft. I use the truck to pull a camper all over the country and there are regulations in place for various state and national parks saying your exhaust cant be louder than 60db at 50 ft on idle. That being said i would love to hear my 7.3 sing with a good flowmaster or something any one who has driven one at WOT knows what im talking about