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Removing catalytic converter from 2002 Mitsubishi Lancer

Can i remove the catylic converter and run a straight pipe/muffler?

It is against federal law to do that. Your state may not have an inspection program but that does not matter. Federal law trumps state law. So the answer is NO.

Sure , if you want to violate federal law and face a 10000.00 dollar fine and annoy your neighbors at the same time .