What are the effects of not using a catalytic converter?

[EzraDella]

Not installing a catalytic converter can have the following impacts on the vehicle: 1. The engine emission warning light on the combination instrument panel will illuminate, and the vehicle's exhaust emissions will significantly exceed the standard. 2. When the vehicle reaches the annual inspection period, it may fail the inspection. Below is a detailed introduction to the function of the catalytic converter: 1. The catalytic converter is installed between the engine exhaust manifold and the exhaust muffler. It transforms harmful gases such as CO, CH, and NOx produced by engine combustion into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions within the ceramic honeycomb structure and precious metals inside the catalytic converter. 2. The catalytic converter can simultaneously convert the three main harmful substances in exhaust gases into harmless substances, hence the name 'three-way' catalytic converter.