What are the effects of removing the catalytic converter from a car?

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Removing the catalytic converter primarily has three major effects, as outlined below: Increased vehicle emissions: Without the catalytic converter, the exhaust gases cannot be effectively purified, leading to emissions that exceed regulatory standards. Reduced vehicle performance: Removing the catalytic converter can increase fuel consumption, thereby diminishing the car's power. Failed vehicle inspections: Since the catalytic converter's removal results in non-compliant emissions, the vehicle is likely to fail annual inspections. Below is a brief introduction to the catalytic converter: The catalytic converter is named 'three-way' because it simultaneously converts three major harmful substances in exhaust gases into harmless compounds. Its working principle involves enhancing the activity of CO, HC, and NOx gases as high-temperature exhaust passes through the purification device. This promotes specific oxidation-reduction chemical reactions: CO oxidizes into colorless, non-toxic carbon dioxide gas at high temperatures; HC compounds oxidize into water and carbon dioxide; and NOx is reduced into nitrogen and oxygen. These three harmful gases are transformed into harmless ones, thereby purifying the vehicle's exhaust.