After changing an O2 sensor, Its been about 20 miles and one day of HARD driving and it hasnt come back on, it usually comes on after a minute or two. Engine seems to a little better. I went out to test the o2 sensors yesterday, and got pretty normal readings on one, but the other seemed a little low in the 0.3 then all of the sudden it was going negative a bunch of times. I checked checked and rechecked I had the right pins on the DME and I did. It was running rough while on the 13 and 40 pins, and then stalled all together. It was really strange. Started up fine again. Then I decided what the hell I have a new sensor ill change it out. Took under 5 minutes without jacking up the car. I bet I fixed my 1222 problem somewhere down the line changing all the crap I have changed out, but im sure I burnt out the sensor after runnning the car rich for 7,000+ miles. Im crossing my fingers here.......