I have Seen More Cars in the past few months than ever before with P0420 Logged, most of these cars have recently had what were supposed to be TYPE APPROVED Cats fitted.

I would think that the way things seem to be going, that TYPE APPROVED Does not Mean Quality Assured, OE spec etc. ??

Who Type approves these things. ? I would think that the only True company that could
Correctly say that these Cats were up to Spec would be The Vehicle manufacturer. ? i,e in this Case Toyota. ?

Otherwise the People Approving them ought to have some responsibility in finding out why so many are failing. ?

Tony.