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Since no one is sure about the warranty issues i am having.. i will go about things a different way.

When the o2 sensors fail, is it both of them, or just the first one.

Also what are some good signs that the O2 sensors are bad, and if the cats are plugged.




If i decide to just fix this problem on my own, what should i replace the cats with? I dont want to go with the stock...

I have an AEM intake and i am running Iridium Plugs.

Any information would be appriciated.