answersLogoWhite

0

They keep the exhast fumes to a minimal, thus reducing the amount of pollution that is let into the air. Without a muffler there would be double the smog that is already hampening many cities worldwide, that is why it is required as an emissions test.

If you don't have a good muffler you will not pass the emissions test. It's job is to both filter out the worst pollution and baffle the noise your car makes.

User Avatar

Wiki User

15y ago

What else can I help you with?