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Baddawg53 · 04-21-2020, 04:36 PM

2017 SS, my car is LOUD... Headers, cam, NPP borla atak ... its loud.

I want to start tracking it, but due to the noise restrictions there is no way I'll ever be able to. I'm trying to think of relatively easy ways to quiet it down.

I'm thinking about putting the factory non NPP on it, but I'm not even sure that will be enough. Maybe adding outlets pointing away from the sound meter also

Has anyone ever tried packing the muffler? I don't care about how it'll sound, just don't want to create excessive back pressure, and to be under 103db.

Any suggestions? Or experience packing a muffler?

04-21-2020, 04:36 PM	#1
Baddawg53 Drives: 17 hyper blue 2SS M6 Join Date: Mar 2018 Location: NorCal Posts: 759	Quieting this car 2017 SS, my car is LOUD... Headers, cam, NPP borla atak ... its loud. I want to start tracking it, but due to the noise restrictions there is no way I'll ever be able to. I'm trying to think of relatively easy ways to quiet it down. I'm thinking about putting the factory non NPP on it, but I'm not even sure that will be enough. Maybe adding outlets pointing away from the sound meter also Has anyone ever tried packing the muffler? I don't care about how it'll sound, just don't want to create excessive back pressure, and to be under 103db. Any suggestions? Or experience packing a muffler?