Dzionassi wrote: ↑
Sun Jul 10, 2022 10:29 am
I suggest you out back OEM injectors back, because it is not your issue.
Inspect cat on bank one. It sounds like you have clogged/damaged cat. Inspection has to be done from engine side.
That might well be too, given the previous P0420. But the problems getting worse immediately after new injectors means something got bollixed-up with those as well. When that kind of thing happens, it's always something you touched. I'm afraid the OP will be doing a lot of tearing-down.
For the OP, be very
afraid of running it much until you resolve the injector issue. @Dzionassi is right, and if that bad cat happens to melt from the leaky injectors, your engine will be headed to the JY.