Yup, a cat works like an oven/stove (read: she gets nice & toasty) and heats any excess (sp?) fuel in the exhaust high enough to break it down.
Personally: I take cats off any vehicle I have. I even took all 4 (yes, four) off of the 2000 Mustang GT I had. If you take them off, you never have to spend the $ to replace them if they ever go bad. That is the only reason I remove them, I'm to freakin cheap 
------------------
--Jess--
If you expect the unexpected, was it really even UNexpected in the first place?
'85 SE, 4cyl, 5spd, silver/grey
'02 Honda Rancher ES 4x4 w/plow and WARN winch, 152 miles, red
'02 Yamaha R6, blue/white, 3200 miles, recent LIGHT case of roadrash
Both '02s for sale/trade for Fiero
[This message has been edited by jlhuber (edited 01-21-2003).]