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18 Posts
I know alot of your guys here have exhaust systems with straight thorugh mufflers, well I was wondering which is the best way to install it, if its unmarked? Mine doesn't say which side is the inlet, so I was wondeing if I should install it with the louver openings inside toward the front of the truck, or the back. I installed it with them to the back because I thought they would be restrictive. What did you guys do with yours?