My experience- I've got a 2 1/2" TTI setup(headers, x-pipe, mufflers, tailpipes) in my 73 Challenger 340. The mufflers are the Ultra-flo straight through welded ones, and they are LOUD. Almost obnoxious. Of course it also has that raspy, buzzy x-pipe sound as well. My motor is built though,
416 stroker 11.5 to 1 comp. Big solid roller cam
This may have something to do with the noise level. The locals tell me I can be heard from pretty far away.....
