Chevy Cobalt Forum banner


  1. Engine Mods
    Hey guys. I'm planning on getting a ZZP midlength header and catted downpipe. I was originally looking at a 200 cell cat on PJ's suggestion, but I also noticed that he mentioned that it would throw codes from time to time. I'd rather have a cat that is slightly more restrictive if it means...
  2. Engine Mods
    anyone have any experience with lug converters i have a set of 18" xxr 5 lugs i would love on my cobalt