Hi! I'm new to the forum.
I have a 2000 Prado 90 5VZ-FE 3.4 Petrol, was my fathers car. He never replaced the catalytic converter nor do I. The car has 145000KM, the question is: The cat could be clogged? Should I replace it with a new one (MagnaFlow o something better than stock)? The quality of the fuel at my country is not as good as other places.