Gutted Cat
Hellsing Agency
Joined: Mar 2002
Posts: 1,561
Likes: 0
I've been told that in CA it is illegal to replace your stock cat for anything but a direct OEM replacement. But like MrFatbooty stated, if the heat shields are in place there's no way to tell. Most hiflo cats will pass CA smog.
Shingo
Shingo