Ok what's the deal. I was in an RT auto rental car all week in So. Cal. There is no comparison in the amount of sound. The RT is twice as loud if not 3 times louder! The sport button actually works and it is loud all the time. Take it off and it quiets down nicely until you get over 4K or open her up. Track mode is suppose to be wide open in my SRT. It is a little louder at low RPM but nothing like the RT. I want the sound of an RT in my SRT. Is it a different exhaust set up. I know the rental cars are all stock so there are no deletes. I would assume they would be using pretty much the same set up. I would think the bigger 392 would put out more sound and running a 6 speed an higher rpms the SRT would be louder than an RT. Dodge got this ass backwards. RT sounds like a beast on the freeway in sport mode. Get it next to some concrete and pin it and drop 4 gears and sounds like king Richard at Talladega. 392 is more intake, mechanical sound than exhaust. The RT is much more fun around town too. Skinnier tires like to slide and spin a whole lot more. Mine just hooks up and goes. The reason I bought a Challenger was having a couple RT rental cars which make you smile and revert back to high school cruising and trouble make at it's best. In fact I had a little stop light racing fun in Hollywood this week in the rental. Had to hold up the Mopar street cred. He tried jumping me hard off the line and it was a sleeper so I wasn't expecting it all. RT still pulled him and we both gave our thumbs and parted ways like the old days. RT sounds so good at high RPM. If it different mids or mufflers I want them.