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 No cat. converter

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Mikel
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Name : Mikel
Age : 40
Location : New Haven, CT
Joined : 2009-07-12
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PostSubject: No cat. converter   Fri Nov 20, 2015 6:47 pm

Hi,
Would driving with no catalytic converter have any ill effects on the car? Mine died a while back and was removed. Much to my surprise, the second O2 sensor has not noticed it and I don't have a check engine light. My MPG has decreased slightly. Coincidence?
Thanks.
Mikel
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AA
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Name : Aaron
Age : 40
Location : C-bus, Ohio
Joined : 2007-01-13
Post Count : 18310
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PostSubject: Re: No cat. converter   Mon Nov 30, 2015 6:47 pm

No ill effects, but many states do inspections to keep cats on cars. Maybe the person who removed yours knew what they were doing and used a dummy sensor, or programmed the PCM to ignore the code.

It won't decrease your MPG. If anything, the engine will run more efficiently without the cat.

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