How to Solve the Loud Noise After Hollowing Out the Catalytic Converter?
2 Answers
The solution to the loud noise after hollowing out the catalytic converter is to replace it with a new one. The catalytic converter plays a part in noise reduction. If the catalytic converter is hollowed out, the exhaust system is prone to various noises and resonances, and the entire system will be unable to purify the exhaust gases, which will cause significant inconvenience for the vehicle's subsequent annual inspections. The catalytic converter is an important external purification device in the automobile exhaust system. Its function is to convert harmful gases such as carbon monoxide, hydrocarbons, and nitrogen oxides in the automobile exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. The catalytic converter consists of a shell, a damping layer, a carrier, and a catalyst coating.
I've encountered this situation before. After hollowing out the catalytic converter, the car's sound became extremely loud with a constant droning noise that hurt my ears. The main reason is that without that purification device, the exhaust is directly released without any buffering, naturally causing increased noise. To solve this issue, I think the most cost-effective solution is to install a new catalytic converter. Otherwise, the noise will continue to affect driving comfort and might even lead to neighbor complaints. You can check local auto parts markets for used or low-priced new units - the cost might be just a few hundred yuan. When installing, ask an acquaintance to help tighten the exhaust pipe bolts properly to avoid air leaks that could worsen the noise. Additionally, inspect the entire exhaust system for any loose or corroded parts, as these issues might compound to create abnormally loud sounds. Remember not to cut corners - prolonged exposure could damage hearing and you might get pulled over for emission tests, which really isn't worth it. Spending a small amount to fix it will make the car quieter and more pleasant to drive. I've tried this method with good results - inexpensive yet effective in solving the problem.
