[MikeR]

Have you ever thought about just putting a thread in plug in the secondary 02 sensor holes. You can buy from Summit racing. Then just tie strap your secondary 02's up under car. I have headers ,no cats and corsa. Both ILLSMOQ, BLWNGTS and myself all have similar setups, but different headers and each of us just tie strapped our 02 sensors and they read just fine. Never sets a check engine light in like 10k miles. As for your problem with passing smog, well that may not happen anyways, if you remove cats.

As far as removing cats, it will sound awesome, mean and have a loud bark. It will make a little more power too. But after about a year or so, Im starting to have days where Im tired of it. So I will be welding in some cats. But I still will leave my secondary 02's tie strapped up.