[danielsatur]

Thanks for the feedback, the down stream H02 sensor, or 2nd sensor is what gives the signal to the ECU/PCU that your catalytic converter was bad.

Using a good OBD II scanner can check temps on catalytic converters too!
Did you use a hand held infrared temp gun?

The bad, or blown cat will run cooler, throw a DTC, and sound like a empty tin can.
A plugged catalytic converter can get hotter, and wont throw a DTC.

Caution - Make sure you remove all broken pieces of cat down stream of exhaust to the tail pipe.