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[Philth]

A couple of local guys here have been getting nabbed for modified exhaust tickets. There has been some on going discussion as to what is legal and isn't in terms of exhaust systems here in Nevada. We cant seem to find anything saying "you can't modify your exhaust". There is no specific definition of a muffler in the State of Nevada for a vehicle. There is one for a motorcycle specifically only. If this is the case, I would think the Federal Laws and the Code of Federal Regulations would imply:

Title 49 CFR
Sec. 325.91 Exhaust systems.

A motor vehicle does not conform to the visual exhaust system
inspection requirements, 40 CFR 202.22, of the Interstate Motor Carrier
Noise Emission Standards, if inspection of the exhaust system of the
motor vehicle discloses that the system--

(a) Has a defect which adversely affects sound reduction, such as
exhaust gas leaks or alteration or deterioration of muffler elements,
(small traces of soot on flexible exhaust pipe sections shall not
constitute a violation of this subpart);
(b) Is not equipped with either a muffler or other noise dissipative
device, such as a turbocharger (supercharger driven by exhaust gases);
or
(c) Is equipped with a cut-out, by-pass, or similar device, unless
such device is designed as an exhaust gas driven cargo unloading system.

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NRS 484.611 Mufflers: Prevention of emissions.

1. Every motor vehicle shall at all times be equipped with a muffler in good working order and in constant operation to prevent emissions greater than those allowed by rules and regulations established by the Department. No person shall use a muffler cutout, bypass or similar device upon a motor vehicle on a highway.

2. The engine and power mechanism of every motor vehicle shall be so equipped and adjusted as to prevent the escape of excessive fumes or smoke.

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This section is funny because cops will issue "exhaust modified to make noise" tickets, yet there is NEVER an instance of any sound measuring going on...

Noise Emission Standards

NAC 484.150 Noise emission standards for operators of vehicles. (NRS 484.6101)

1. No person may operate either a motor vehicle or combination of vehicles of a type subject to registration at any time or under any condition of grade, load, acceleration or deceleration in such a manner as to exceed the following noise limit for the category of motor vehicle based on a distance of 50 feet from the center of the lane of travel within the speed limits specified in this subsection:

Under 35 mph: 76dba

Over 35 mph: 82dba
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So....whats your state all about?

Discuss.