A catalytic converter is one of the most important parts of a car's emissions control system. It treats the exhaust before it leaves the car and removes a lot of the pollution. Learn how they work.
EXHAUST & EMISSIONS
I have a dirt bike and the exhaust pipe has this big bulge in it near the engine. What is the bulge for? See more »
Here are seven easy ways to reduce your emissions without affecting the quality of your daily commute. Learn more about the top 7 ways to reduce your driving emissions without reducing quality of life. See more »