Intermittent P0420 Check engine - Catalytic Converter replacement?

$288 for a new aftermarket Walker cat makes more sense without risking your eyes, lungs or liver, probably for nothing based on reports and shops who have tried chemical solutions.

If you think about it, an industrial quality cleaning system that actually restored a bad cat could make more per oem cat as “rebuilt” than the $300-$500 metal recyclers pay for a $1800 oem unit.

Besides those points, every backyard mechanic knows about the o2 cheat to eliminate the code most of the time. But you still risk engine efficiency or damage running a clogged cat.

 

Yeah I wasn't sure whether this was the guy from Slovakia or California apparently California which is just as bad as far as the laws goes with cars and things apparently