Not sure if you guys rememeber me but I had posted a while back that I had gotten an 06 V-6 Mustang that was really loud but wanted to figure out why. I finally flound out! I took the car to get an oil change and the tech asked me what I did to it to make it so loud. I didnt know, so he crawled under it and apparently it has a Flowmaster Catback on it.
That answers my question..even though I dont know what that is, I like the way it sounds
Thanks to everyone who replied to my post trying to help!