I would agree if you get it at a big chain store, but they make high quality aftermarket cats that perform just as good if not better than the factory cat.
I Tired Premium fuel and the code went away. That was for the long trip.Tired with mid-grade fuel again code came back. interesting. $75 worth of fuel down the drain. I think the PCM was tunned for Premium fuel. Huge possibility. since it had 5 previous owners.I just going to use up the tank and filler up with Premium chevron fuel.