Dude. Once it stops raining here I plan on getting a better vid of my truck. I had a flowmaster 40 on mine and it was pretty loud and a little ricey pass like 4,000rpm. I liked it though. I also have DT headers, custom CAI, and 2.25 cat back piping. However, I ended up finding out I had a knock off flowmaster and then one of the pieces inside broke loose and it was rattling really bad. Now Im running the same setup but with a magnaflow muffler. I'll say I wasnt too happy when I first switched cause I couldn't barely hear the magnaflow. However, the magnaflow has started to break in now and is still getting louder. It also seems like it provides better flow. Also, the magnaflow will never be as loud as my flowmaster 40, but its getting louder and the sound is starting to come alive. In my comparison the flowmaster was a loud aggressive raspy and crackly sound with a lot of interior drone. I actually liked it that way though. Im starting to grow on the magnaflow though. It has barely any resonance in the cab so you often dont here it inside the cab unless you punch it or get in the high revs. It stills sounds good and louder when you here the truck drive by you. Its more of a low deep growl that im starting to like, not as obnoxious. Ive read it takes a while to break in and get louder though so thats why im waiting for a vid with the new magnaflow.
Here is a link to my performance thread. There is a few different videos from inside the cab, behind the truck, and of the intake, but their not that great. Also, they were taken right after I installed the headers and intake and my flowmaster was all screwed up and rattling and not sounding too good.
Anyways ill get some new better vids soon with the magnaflow after it breaks in some more.