Will the exhaust sound become louder without a catalytic converter?
2 Answers
When a vehicle is not equipped with a catalytic converter, the exhaust sound becomes significantly louder, especially during startup, when the exhaust pipe emits a noise similar to that of an old-fashioned tractor. Definition of a catalytic converter: A catalytic converter is the most important external purification device installed in a vehicle's exhaust system. It converts harmful gases such as CO, HC, and NOx emitted from vehicle exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. Cleaning of a catalytic converter: The cleaning method for a catalytic converter is known as the "drip method." This involves connecting a plastic hose to the engine's vacuum solenoid valve and using the air pressure in the hollow tube to draw cleaning agent from an infusion bottle into the engine. As the cleaning agent exits through the exhaust pipe, it cleans the catalytic converter. Lifespan of a catalytic converter: The lifespan of a catalytic converter typically ranges between 80,000 to 100,000 kilometers. The exact lifespan depends on the vehicle's usage conditions, as well as the quality of the fuel used and the driving environment.
As a veteran car owner with decades of experience in the automotive circle, I've seen many people remove the catalytic converter to save money. Indeed, the exhaust sound becomes much louder, roaring impressively, but don't be fooled by appearances. The converter acts like a small maze, absorbing and scattering sound waves; without it, exhaust flows out unimpeded, naturally amplifying the volume. This issue triggers a chain reaction—excessive vehicle emissions worsen air pollution, risking fines if caught by police, and possibly triggering the engine fault light. In my younger days, driven by curiosity, I tried it myself—the sound was louder but more annoying, and prolonged use harmed the engine. Remember, factory equipment is most reliable; don't alter safety components for noise. Otherwise, repair costs will hit harder—stick to professional maintenance at authorized shops.
