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Muffler/flapper delete single exhaust


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I have a 2019 GMC Sierra slt with single side exhaust. I’ve read through about 10 pages of forum to see ppl’s comments on muffler delete but haven’t seen many for single exhaust. I bought a summit racing pipe to delete the muffler and flapper valve. My question is has anyone experienced drone with single exhaust muffler/flapper delete? Drone is pretty much all I’m worried about. I drive a lot of highway and currently my baffles are bad so they rattle. 

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