Best of my knowledge, they do a visual and computer check. High temp tape might do the trick, but I doubt it will stop my computer from throwin a code for an exhaust leak. Regardless, I need a new cat because my car sounds like an STI with a crazy sputter when I shift. I did a little research, and If I can't find a killer deal through a forum member, CA does up to $500 in assistance to help with smog repairs(if I'm accepted).
*EDIT*
Pepepingo and Jason, I PM'd both of you but it's not showing up in my sent box. Not sure if you received my PM's or not.
Zip code is 92117
I can get an OEM cat here for 920 from the dealer(slight discount) while an aftermarket is merely 200-300 at most. Not really sure what my limit is, so please throw an offer my way and I'll see what I can do.
Thanks guys.