on my 1989 Coprolla SR5 my first factory cat converter lasted about 14 years. The second one lasted less than 2 years, now on my 3rd. I am pissed off the last one lasted less than 2 years. What a total fraud! And they get away with this crap! The auto shop tol dme the factory ones were buitl be good and expensive, the aftermarket Cats are not built as good. We are ripped off here in the USA on Smog parts, totally raped!
BTW they also communicated with the California Beaureau of Automitive repair and the Smog control nazis.