Chevy Cobalt Forum banner
cel code

Discussions Showcase Albums Media Media Comments Tags Marketplace

1-1 of 1 Results
  1. Engine Mods
    Has anyone here ever gutted a catalytic converter? My car has been throwing a P0420 Catalyst System Efficiency below threshold code for a while now, gonna try gutting my cat to see if it helps at all. Has anyone ever done it before that can give me tips? Or is there a way to clean it that is easier?
1-1 of 1 Results