20th Apr 2014, 07:38

Unless you ignore an O2 sensor light that's on; that can plug a cat and also it can decrease gas mileage. In our state it will also fail inspection.

When it comes to various maintenance issues, it is never one cure all, end of story. My family has owned an auto repair shop for many years, and have learned to be open minded. Especially with late model cars.

20th Apr 2014, 19:28

What happens if you get bad gas loaded with water run through a cat? End of story.

22nd Apr 2014, 12:52

Cats can fail in certain ice and snow conditions when they are very hot. They can crack.