More data. Pretty much every time the code doesn't set on the first drive it will set right away on a second drive. But on to the third drive I get no CEL. Mileage has gone way up since before I rewired the o2 but I haven't tested a full tank yet. Also got code 12 on the freeway, egr system, but it didn't come back on after shutting down and restarting. Seems to take a long cruise to set it. I think I can feel lean burn kicking in and out even at times, so I think I'm getting there.
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