Hello all, I hope you can help me out with a problem here.

We've had a 99 Durango for 6 years now with almost 200k miles.

2 days after getting a new catalytic converter installed, another problem popped up. We were driving home and I noticed a strong burning smell(smelled like fire), then I noticed the CEL come on. I pulled the code at autozone and it was P0305. When I got home, I noticed alot of water coming out of the tailpipe and somewhere else under the car.

Anyone have any idea what the problem may be?