Diesel vehicles do not have catalytic converters. Diesels sometimes have a part called a resonator or a diesel particulate filter. Since it doesn't exist, there is no legality issue.
It can be, but it is illegal to remove a catalytic converter.It can be, but it is illegal to remove a catalytic converter.
Know that it is illegal to remove the converters. Also know that the engine will not perform correctly with the converters removed.
Carbon Monoxide
Remove harmful pollutants from the exhaust gases.
It is illegal to remove a catalytic converter on any vehicle and carries a hefty fine if you are caught.
If built after 1996, then yes.
Catalytic Converters
No It is illegal, It will harm the economy, and performance of the car
Remove both converters, install the new ones. Don't forget the "donut" gaskets.
Catalytic Converters
There are not two catalytic converters. Working towards the muffler from the flange, you have a RESONATOR, a CATALYTIC CONVERTER and finally a MUFFLER.
Catalytic Converters are required in every state and city in the United States including American Fork, Utah. It is illegal to remove them.