[MPDano]

Originally Posted by Danglerb

EPA appears to want the catalytic converter assembly including headpipes up to the manifolds to be replaced as a unit, and that unit to be specifically approved for the vehicle with a CARB EO#.

According to some of the muffler guys the situation is a mess and in the process of being revised.

Up until January cats could be "universal" so a single model fit essentially everything from a Honda to a Corvette. Now the CARB EO# must be vehicle specific, which I think means tested on each vehicle model. Also the cats have to have a 50k mile warranty.

Yup, this is correct as this is why I bought a Magnaflow Cat with numbers/letters on the bottom. They checked when I smogged.

Here is my Cat specific to my MY 928.