Did you check the plugs? When you make jetting changes you should always check the plugs to make sure they correspond to what your 02's are telling you.
I didn't check them this time around but back in CO when I got the WOT tune dialed in to mid-12 AFR on the wideband readout I did check the plugs and they showed the tune was pretty much spot-on. I also ran the car on a chassis dyno where the shop plugged in their O2 sensor and the AFR readouts were the same as with mine. So I'm inclined to believe the O2 sensor is pretty accurate, I will still pull one or two plugs next time I drive it though. I just need to find a place where I can safely shut the engine off while at WOT and come to a stop, that way I make sure they aren't showing the ratio at part-throttle or idle.
