mufflers

I just got rid of my super 40 flowmasters. New system is a 2 1/2" x-pipe with Dynomax ultra flow welded. Much much much better sound. Sounds very healthy now and is louder under throttle than the super 40's.


Much better throttle response as well. Not all the muffler but a big part.

I am thinking of giving these dynomax ultra flow welded muffs a shot.
I currently have thrush non turbo's which is a direct knock off of flowmaster 40's, heavy too.
I love the sound of them but just as abodyjoe said, the drone is what kills you.
I have a 2-1/2 X-pipe system with turn downs before the rear axle so maybe that had something to do with the drone, but I think it will still be there even if I take it all the way past the bumper.

I was told that chambered mufflers is what gives you the droning noise.

Here is my question...are the dynomax utlra flow welded mufflers chambered or no?