In 2001 the Ram 2500 diesel did not come with a cat. it has a resonator and a muffler. the thing under the cab that looks like a cat is actually a resonator. so no they are not required
It did from the factoryIt did from the factory
Depends of the year. In 2008 US required DPF (diesel particulate filter) on all new diesel-powered trucks. The DPF is similar to the cataytic converter for a gasoline engine.
Yes, legally and for the computer to function correctly you will need a catalytic converter.
It is the large part in the exhaust system in front of the muffler.
No. It is illegal to remove a converter from any vehicle. It carries a heafty fine if you are caught. Do not do it.
Yes, your 2003 ram diesel has a catalytic converter. The converter is located under the cab.
With gas engine, yes. Not sure about diesels. Diesel, yes
It did have one from the factory.It did have one from the factory.
Yes. From the factory it has a catalytic converter.
Replace the catalytic converter.Replace the catalytic converter.
Catalytic converter failure.Catalytic converter failure.
Yes