1991 crx hf has been throwing code 1 for a while now. I am trying to fix it and i have been thinking about trying a new cat out. Problem is i am not sure if the hf came with 2 cats or not. I know it has the one off the manifold in the front. But mine has another one after the down-pipe section like the other models had. Is this factual or did someone try to add a good cat on it? If it is not factory does anyone have the original part that goes in place of this cat?