Join Date: Jul 2009
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I personally think it makes a pretty big difference on sound between with/without muffler. I ran my truck straight 5" for a couple months, then went to a muffler. Will not got back to straight. There is a little too much whistle / air movement sound with a straight pipe. The muffler seems to calm the sounds a bit and give it a nice throaty tone.
I have also found that between different brands of mufflers, you will get entirely different exhaust sounds. I have yet to hear a no muffler stack kit installed, but i bet its pretty loud. Some of our test trucks have merely a dump pipe installed right after the downpipe, too loud for my taste!
Get us some pics of what you end up doing! Lets put that rig on our customer gallery section. Bennet was one of the first to purchase a 6.4 Black Maxx from us.