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Old 02-21-2019, 11:46 AM   #15
VR Baron
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Drives: 2012 VR 2SS RS M6
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A guy tested the npp at full open at idle and 4000 rpm with a decibel reader as the ref station would. Read the max 95 dB. But that was in the garage where I suspect a echo could cause a louder reading. The chp uses 95 dB at 50 ft. I have what is in my sig. the 3” catback booms at low rpm, removed hiflow cats and put stock ones back in to be legal, and a little more quiet. Sounds good still and more liveable. Only lost 11 hp. To compare, with the hiflows on, at scca autocross events there is a 95 dB max and My car never hit that. They gave a meter set to make sure.
Now a cop hearing your car can be another thing. I felt best not to be noticed at all so not to get pulled over
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Old 02-21-2019, 11:55 AM   #16
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https://www.camaro5.com/forums/showthread.php?t=314023
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