Yea, I actually originally had 18 inch res, and switched to non res because I wanted more noise. I'm honestly not sure what the exact definition of "drone" is. There is definitely a high volume of noise in the cabin but there isn't any weird resonating type of noise. Just loudness.
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2012 GM 6MT sports package | FI non res cf exhaust | K&N Drop Ins | Viper 3303 security system w/ tilt sensor | GTR start button | 35% rear 45% side window tint | Michelin PSS
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