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Old 29 Nov 2011, 12:33 am
AJ AJ is offline
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Default CARB approved Catalytic Converter for 02 Civic Si?

I have a 2002 Honda Civic Si with the 2.0L engine. I've been driving around for months with a bad Cat Converter. It's not that I am neglecting the car it's just IMPOSSIBLE to find a CA state approved Cat Converter thats affordable for the car aside from the Honda dealership which is more than $1100. Ive called and visited numerous muffler shops all telling me the exact thing that my Cat is dealer order only. There are dozens of universal Cats for my model but are only 49 state legal for around 100 bucks. I don't want to risk not passing smog and I know the test will show the efficiency of a universal product. I know CA has the strictest emissions standards in the world, but am I really forced to pony up the money that I don't have for some metal piping thats no bigger than my forearm? Any Honda expert please answer. Thanks.
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Old 29 Nov 2011, 12:46 am
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I doubt your converter is bad. The life expectancy of a catalytic converter is roughly 20 years and the youngest one I have seen that was actually bad was 18 years old. You don't mention how the diagnosis came about, but if it was because of a P0420 code you should know those are more often the result of trouble with mixture control or a leak in one branch of the intake or in the exhaust ahead of the converter. At 9 years old the upstream O2 sensor is getting sluggish, too, and that is a better suspect than the catalytic converter.































The deal with P0420 is that it is the result of the downstream O2 sensor seeing excessive fluctuation in the oxygen level of the exhaust coming from the catalytic converter, especially in a way that resembles the switching of the upstream O2 sensor. Anything that feeds indigestible exhaust to the converter will bring in a P0420.
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Old 29 Nov 2011, 01:01 am
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yup in cal, hi flow cats are illegal. sucks for you, the only thing they consider ok is the OEM cat, which unfortunatly will run you about 1100 just like you found out the hard way, idk maybe u can find one from a salvege yard that doesnt have too many miles on it
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