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Q: is an exhaust leak repair part of replacing the catalytic converter? on 2003 Hyundai Elantra

when having my oil changed, I was told I had a major exhaut leak and it was affecting my gas mileage.

when I bought the car I knew the cat would need to be repaired before my next emission inspection.

the engine light is always on.
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Maybe, maybe not! But you can have them both fixed at the same time. No way to tell without looking at the system.
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