This is the latest MVA regulation.
Consolidation current to October 16, 2018
http://www.bclaws.ca/civix/document/...bc/26_58_multi
Muffler
7.03 (1) 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.
[am. B.C. Reg. 29/59.]