I think my shop threw it out because I don't remember seeing it. According to Magnaflow's site, they were the ones who should have filled it out. :-(<ul><li><a href="http://www.car-sound.com/03warranty.htm">Magnaflow's Cat Warranty</a></li></ul>

They usually don't fill them out since they warranty all their work but I didn't buy the cat from them.

I'm probably just gonna buy a new cat and see if I can get money back for the old one.