Thread: Straight pipe camaro NPP system and remove muffler?
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Old 11-26-2016, 12:38 PM   #21
KILLA BEE
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Drives: 2021 ZL1 1LE A10
Join Date: Mar 2013
Location: Nottingham Md
Posts: 1,997
Doesn't the npp mode selctor do more than just adjust the sound level. Throttle response, gears, ride etc....or no
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