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Does Borla S Type/2nd cat delete need a tune?
So if I install a Borla S Type full exhaust and also do a 2nd Cat delete will the car need to be tuned?
So it will sound like this...
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2018 ZLE - M6, Nightfall Gray
GM previously owned:
2014 SS M6
2014 ZL1 M6
2019 ZL1 M6
2016 Z06 M6
Last edited by LT4 650; 01-26-2021 at 04:35 PM.
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