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Will clamps add any sound?

BigBadChevyMN

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So I know I will probably be laughed at but I saw on another thread that people used metal clamps to lock the flapper in front of the muffler on the 5.3L's in the open position as well as cover the mesh screens in the rear next to the exhaust tips and spare tire and noted they had a small but noticeable increase in sound from their trucks.

I installed everything last night and didn't have any audible difference at least to me. Cold start sounded good but after a few seconds it went back down to idle and didn't seem any louder than it did before (stock).

Any thoughts or any else try this?

My main thing is I want more sound out of the exhaust but to much that it's obnoxious in my neighborhood or to the wife.

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