My car threw some codes at me today:
P2196 O2 sensor signal stuck rich on bank 1 sensor1
P0153 Oxy Sensor Circ Slow Response (Bank 2 sensor 1)

I don't know if they are the same I got when I first got the headers installed. I didn't write them down then. I'm thinking the car just needs a better tune to accommodate the headers and get those blasted 02 sensors off my back. I'm looking into just picking up the SCT X-Caliber 2 from Brenspeed with a tune for it. As long as my car seems to be running fine, I'm going to go with it. But if told otherwise, I'll park it (as long as I can).