Re: Muffler inlet-outlet
usually on the inlet side of the muffler you will see a bunch of serrations that look like small louvers, the rounded part of the serrations point to the inlet side of the exhaust gases. I have run the mufflers both ways, all it does id create a little more back pressure and changes the sound of the muffler, usually louder, if the mufflers are oval or flat make sure the seam id down, in case of a blown muffler the hot gasses will not hit the floor boards of the body, if you have a glass pack muffler to look at tou will see the louvers im talking about
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