Catalytic Converter problem and question
I just took my truck to install the volant cat-back exhaust yersterday at a muffler shop. The mechanic looked inside my nissan catalytic converter and noticed they were empty. No ceramic inside at all. It just looks like an empty soda can, so to speak. He said it's supposed to have ceramic in there or it won't pass smog. Has anyone else noticed this on their truck? I'm just wondering if it's normal or should I take my truck to the dealership? I just don't want to deal with them due to some reason, sometimes they never entertain me! please!
...and looking for fun