Ok...info from the dealership.
I had two P2000 codes...dude looked up a TSB, cleaned my O2 sensors, reflashed the PCM (even though I already had AX) and installed some kind of kit....not sure what that is, but I had G 30 done in January. They said that was the cause of the dirty tailpipe.
Also, on another note, those of you who reported a loud metallic screech off the front right of the engine about 30 sec after start up should get your A/C lines checked. I was low on refrigerant and had a cracked line. Apparently a new drier is required as well as a new AC line, but the line is backordered nationally. There was a seperate post about this somewhere else, but I can't find it now.