No, when I am driving at idle and normal driving no smoke comes out. Only when I am at very high rpm's, and when vtec engages does smoke come out for a very short amount of time. I believe you are right about the
too rich/lean. The cat looks original, so i dunno bout that. I guess i need to just drive like a normal human being and i will be all set, i get about 32 mpg's mostly city some highway so I figure it is running alright.