Sounds like a problem to me. (emissions)
From what I hear cats are pretty expensive for these guys, and I know you have already spent a pretty penny on your car so far.
You can not buy any used cats from a junk yard around us, but I will keep my eyes out for one.
Jason
Jason
00 Audi S4, 2.7 Bi-turbo quattro

01 S10 Xtreme, 4.3l
98' Contour SE with some mods
96 Cavalier (beater)