The problem is these have 3 catalyst monitors. The pre-cats MUST work or you get a MIL which is an immediate failure. They put a universal "rear" cat on last year, it has a pre-cat on each manifold and another (rear) after the crossover pipe, which didn't turn the light off. The laws also state the car MUST have the same number of converters as OE. So you can't gut the pre-cats and install one big converter.
If you spend $200.00 you get a one year waiver. But if these converters are any good you can actually fix the car for 2 years worth of waivers. If the pre-cat is damaged, it's a victim of an aggressive FI service, then it likely will run better too. I didn't do the FI service.
I remember this type converter on the early Mitsubishi/Chrysler engines. They used to get melted down pretty often.