Yep I Do have a p0420, i thought with a cat in between the two sensors i wouldn't get that .. ?
hopefully its not much of an issue if/when i need to smog the car. i can claim OD1 and force the tail pipe sniffer and I should pass that. ( i think)
my last motor + exhaust did not throw a cat code 93' 1.8L with a summit hi flow , and an O2 after the cat.