This was the purpose of the SEMA-supported bill. I don't know if it's still in play (i.e., is this SEMA's next step?), though. Virginia has introduced SAN-supported legislation (S.B. 180) to implement a fair testing procedure for vehicle owners accused of unreasonable exhaust noise violations. This bill applies to motor vehicles with a gross weight of 6,500 pounds or less. A vehicle cannot be in violation of the 85-decibel exhaust noise limit unless it has been tested under these fair standards. The bill currently awaits consideration in the Senate Transportation Committee.
S.B. 180 implements an objective testing procedure for determining if a vehicle’s installed exhaust system is in excess of 85 decibels, measured at a distance of at least 50 feet.
S.B. 180 supplies inspectors with an enforcement standard, replacing a system that relies on subjective judgments on whether an exhaust system amplifies the noise emitted by the motor vehicle.
S.B. 180 allows the operator of a vehicle to defend an exhaust noise violation, recognizing that the best way to address exhaust noise is by establishing a fair and reasonable exhaust noise decibel limit.
What passed is totally subjective and can be applied in a punitive manner. 
Last edited by Brad_Haak; 04/14/22 01:29 PM.
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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