Legally you can only replace a catalytic converter with another catalytic converter.
Yes, but why would you want to?
It is illegal to remove the converter.
It's illegal to remove the converter. Besides the engine will not run correctly with the converter removed.
no, a catalytic converter removes harmful gases produced by an engine, headers simply provide increased airflow out of the exhaust
yea you can take it out but its illegal so i wouldn't recommend it. im pretty sure its a federal law to have a catalytic converter if the car came with one
No, it is illegal to remove a converter and carries a hefty fine.
No, it is illegal to remove a converter and besides the engine will not run right with the converter removed.
Not legally.
Take your car to a certified mechanic and have it checked.
Not legally.
There isn't a converter on a diesel engine.