Section 13 AAC 04.215 - Noise prevention; mufflers(a) A motor vehicle must be equipped, maintained, and operated so as to prevent excessive or unusual noise and the escape of fumes into the vehicle. A motor vehicle must be equipped with a muffler or other effective noise-suppressing system in good working order and in constant operation. No person may use a muffler cutout, bypass, or similar device, or modify the exhaust system of a motor vehicle in a manner which amplifies or increases the noise emitted by the engine of the vehicle above that emitted by the muffler originally installed on the vehicle for use on the highway or a vehicular way or area. A person may not alter an exhaust particle emission system built into a motor vehicle to decrease its effectiveness.(b) The engine and power mechanism of a motor vehicle must be equipped and adjusted to prevent the escape of excessive fumes or smoke.In effect before 7/28/59; am 12/15/61, Register 3; am 8/10/66, Register 22; am 12/31/69, Register 31; am 6/28/79, Register 70