This section can help you keep your exhaust system working properly. Learn how mufflers, catalytic converters and oxygen sensors work.
FeaturedWhy is there a bulge in the exhaust pipe of my dirt bike?
I have a dirt bike and the exhaust pipe has this big bulge in it near the engine. What is the bulge for?
How does the oxygen sensor in a car work?
How does the oxygen sensor in a car work? See more »
What is a catalytic converter and how does it work?
What is a catalytic converter and how does it work? See more »
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