can you legaly bypass a cat[lytic converter in mn
No, if it’s less than 25 years old I think. Why would you? You can get one replaced pretty cheap at a muffler shop.
No. It is not legal to remove a catalyst from a car originally equipped with one. If you have emissions testing you’ll fail.
And if your car has an oxygen sensor you’ll mess up the engine operation.
No but its a federal thing not state.
It can be a state thing too.