Is it legal to modify a catalytic converter for NY State emissions?

In New York State, modifying a catalytic converter to enhance performance or remove it entirely is illegal and violates emissions regulations. The state adheres to strict Environmental Protection Agency (EPA) standards, which require that vehicles maintain their original emissions control systems. Any modifications that affect emissions control can lead to fines and penalties, and vehicles may fail emissions inspections. It's essential to keep catalytic converters in their original condition to comply with state laws.