Will the noise increase if the car's catalytic converter is removed?
2 Answers
When the catalytic converter is removed from a car, the exhaust sound of the vehicle will become 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: The catalytic converter is the most important external purification device installed in a car's exhaust system. It converts harmful gases such as CO, HC, and NOx emitted from the vehicle's exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. Cleaning the catalytic converter: The method for cleaning the catalytic converter is known as the "drip cleaning" 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 the cleaning agent from the infusion bottle into the engine. The cleaning agent then cleans the catalytic converter as it exits through the exhaust pipe. Lifespan of the catalytic converter: The lifespan of a catalytic converter generally 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 mechanic with 20 years of experience, I've seen many car owners remove their catalytic converters to save money. Once removed, the noise really increases – without the honeycomb structure of the catalytic converter to muffle the exhaust, the sound blasts out deafeningly. Driving in the city becomes an ear-piercing drone, and it's even worse on the highway. It's not just about the noise; the exhaust emits thick black smoke, exceeding emission standards by three times, guaranteeing a fail during the annual inspection. The sensors also throw error codes, potentially damaging the ECU. I always advise my customers: spending a bit on an aftermarket part is better than removing it. Don't skimp on small savings and ruin your car.
