New to the site and I have a question about Catalytic converters.
I have a 1987 BMW 325i great little car.
Yesterday I took it to get annual tune-up, oil, lube and smog.
The tech said I need a new CAT. 1600.00 manufacturer
I know I can get after market a heck of a lot cheaper and installed for less than that.
However when I asked the mechanic about it, he adviced against aftermarket and said if thats the case he wouldn’t waste the money I should sell my car to the state as a gross polluter.
at 15mph it failed
at 25mph it passed
Are aftermarket CAT’s unreliable?