Ok so earlier this week I posted about having a misfire of some sort when I hit a bump it randomly happens sometimes. I have a oem cat I got put on about 12k miles ago. I reset the codes and replaced the mass air flow sensor but that's about it. Was thinking about replacing the coil packs also.
Misfire during a bump in the road!!!
Check for loose engine grounds.
It’s been 6k miles since a new engine and my 08 BC started doing it. It was a loose ground. O2 sensors are cheap compared to replacing a cat. And a misfire will kill a cat on these engines very quickly.