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2nd Cat delete. New tune? AWE cat back?
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12-17-2019, 11:48 AM
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chaospiece
Drives: 2018 SS, 2016 GT
Join Date: Mar 2018
Location: California
Posts: 210
I had no secondary cats with stock npp, it crackles slot more but not much louder, the loudness has more to do with your mufflers.
I kept NPP and did cutouts before the muffler, that way I can go back to quiet because loud can get annoying.
chaospiece
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