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I got the GM upgrade for my 2018 RS V6. I really liked the sound, but if you're after volume you should look for something else. At idle it was not much louder than the standard exhaust, but at higher RPMs it had a nice growl to it. Certainly not anything that will make your neighbors hate you. It had zero drone at highway speeds. It's pretty hard to tell what it will sound like from a recording. You really just have to experience it in person. Personally I think it's perfect for the V6 and had no regrets doing it. It took the shop less than an hour to install it.
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