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Putting in CAT for inspection?

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Old Apr 24, 2015, 12:06 PM
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Putting in CAT for inspection?

Figured this would be the best place to post this; correct me if I'm wrong.

I have a 2005 EVO 8 that has a gutted cat and straight thru exhaust and is built to 450 AWHP. I need to get an inspection to renew its plates in Missouri. I put the catalytic converter back on and it shot numerous codes out apparently. (didn't ask which codes). But obviously it didn't pass the inspection. What can I do? Thanks!
Old Apr 24, 2015, 12:19 PM
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Why kind of inspection/test do they do?
Old Apr 24, 2015, 12:20 PM
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Emissions and safety.
Old Apr 24, 2015, 12:23 PM
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do they do a sniffer test or just plug into the OBD II? If just plug in, like NY, then you can staycatless as long as you don't have any codes.
Old Apr 24, 2015, 12:26 PM
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Originally Posted by ddlopresti
do they do a sniffer test or just plug into the OBD II? If just plug in, like NY, then you can staycatless as long as you don't have any codes.
They do the sniffer test and plug in to scan. I tried to wing it to pass catless, but obviously didn't. So I bought a oem Mitsubishi converter, put her in, and she thru numerous codes out from it.
Old Apr 24, 2015, 12:28 PM
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Need to pull the codes to find out. But installing a cat on a car tuned to not have one shouldn't throw codes..
Old Apr 25, 2015, 08:38 PM
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Did you have codes before you put the stock cat back in?

Do you still have a rear O2 sensor? If so how is it installed and is it active or "shut off" in the ECU?
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