I have had my catalytic converter replaced, along w my engine, less than 2 years ago. now my check engine light has come back on and the inside of my car smells very gassy and exhaust smelling while driving and i'm being told that it's my converter again and they say it should not be having any problems in this short amount of time. i called the dealership which initially fixed the problem and they aren't helping and basically saying it'll be my responsibility again! *tr