I was wondering if anyone has installed a Flo Pro #2504 Muffler(dual in and out muffler to replace a stock muffler) in a 6.0 Chevy Silverado(2004). I installed a Magnaflow #12599, a few months ago, and it sounds great, but has too much noise in the cab. I read where the Flo Pro wouldn't be as loud. The Magnaflow is a dual 3 inch in and 3 inch out, and the Flo Pro is a dual
3 inch in and 2 1/2 inch out. Would that be the reason for the Flo Pro being not as loud? Thanks for any help- posted
18 years ago