So, I've recently replaced my catalytic converter, bank 1 and 2. Both were a pretty penny (About $1,500 Each), I inspected the old catalytic converters and they look to have failed due to being clogged. I was getting P0420 & P0430 codes (Catalytic converter below efficiency).
I ran a borescope camera through one of the o2 sensor holes and noticed the cats were clogged with some type of white deposits. Definitely don't want the same thing to happen to the new cats, so i want to try and figure out what actually went wrong to cause them to clog up like this before i actually start driving the car.
Anyone know what caused them to turn out like this, and how i can go about fixing whatever issue it is?