im new to the site i drive a saturn l200 2.2 ecotec, auto trans. havent done much to the car yet, new rims and a specter cone intake air filter. but i have had the known issue with my car, cam slipped and screwed up the timing chain, somehow in the process it overheated my cat and i have a diagnostic of "catalyst level low" i replaced the timing chain "which was very fun" and got it all running and now i need to fix the cat, any suggestions on how i should go about it? btw i'm only 19 money is a bit limited but all suggestions would be appreciated.

don't try fixing the cat just replace it