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There is specific laws and guidelines regarding the use of after market exhaust systems. The laws are as follows.
Mufflers
The following are the laws for exhaust systems for B.C.:
Section 7.03 (1) of the B.C. Motor Vehicle Act Regulations indicates that a motor vehicle propelled by an internal combustion engine shall be equipped with an exhaust muffler consisting of a series of pipes or chambers which ensures that the exhaust gases from the engine are cooled and expelled without excessive noise.
Cut-outs prohibited
(2) No person shall drive or operate a motor vehicle propelled by an internal combustion engine when the muffler with which the vehicle is equipped is cut out or disconnected from the engine.
Part removal prohibited
(3) No person shall drive or operate a motor vehicle propelled by an internal combustion engine equipped with a muffler from which has been removed any baffle plate or other part.
Alteration prohibited
(4) No person shall drive or operate a motor vehicle propelled by an internal combustion engine equipped with a muffler the exhaust outlet of which has been opened or widened.
Noise increase or flames prohibited
(5) No person shall drive or operate a motor vehicle propelled by an internal combustion engine equipped with a muffler or exhaust system to which is attached any device which increases the noise of the expulsion of the gases from the engine or allows a flame to be emitted from the exhaust system.
Failure to comply with Unnecessary Noise, the excessive noise from exhausts systems, contrary to Section 7A.01 of the Motor Vehicle Act Regulations will result in a fine of $109.
Standards for the Approval of a Motor Vehicle
Vehicle noise
Section 27 of Standards for the Approval of a Motor Vehicle indicates that a motor vehicle shall be equipped with an exhaust muffler which complies with section 7.03 of the regulations.
The opinion of an inspector as to whether the engine and exhaust noise is greater than that made by other vehicles in good condition of comparable size, horsepower, piston displacement or compression ratio shall determine whether exhaust gases are expelled with excessive noise.
When tested in an inspection station, the vehicle engine, any auxiliary engine and exhaust level shall not exceed Table 3 standards.
Table 3
Class of Vehicle Maximum Allowable Sound Pressure Level DBA
Light duty 83
Gasoline-driven heavy duty 88
Motorcycles 91
Diesel-driven heavy duty 93
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