After making some changes to my setup, I re-initialized the PFC and started on the idle learn process from a cold start. I was messing around outside and came in 10 minutes later to check on it and turn on the rear defroster and I smelled something that seemed like burning that wasn't one of the usual FD smells.

I popped the hood and couldn't see find anything unusual. Looked under the car and the greasy nasty piece of cardboard I always leave on the garage floor was literally smoking from the heat of the highflow cat. If I had been outside any longer it may have auto-ignited and burnt the whole car/garage/house to the ground, who knows. This after only 10 minutes of idling from a cold start.

Another thing to add to the "not to do" list for garage safety. Careful out (or in) there guys!