2000 BMW 323i Q&A
2000 BMW 323i Question: getting codes that caytalytic converter issue.
if its a catt issue you need to repl no punch out center that will make things worse. who ever told you to do that or it can be resealed needs to stick to oil changes - globalhelper
FYI It is illegal to remove the catalyst from the converter and both the shop that does it and the owner of the vehicle and be fined up to $10,000 and 1 year in jail. - Chevy Power