Well tonight was a little different story. I adjusted the spark tables, and a bit on the lower VE table, and was going for a test drive.
Then I notice cruising AFR seems to be quite lean and she's surging some. WTH? Check the scanner and she's updated to 10.35kPa again (happened a week and half ago or so)! Cycling key on / off did nothing to change it. So just went back home. Thought maybe it was the tune somehow, so tried yesterday's .bin file, and the 10.35 remained.
The only way I could get well from it was to try an unpatched tune. Load it, key on, then baro matched the current MAP reading, which is no surprise.
So then I loaded the latest tune back in, and it stayed put at 54.36 but I didn't drive it to try it out and see if it held or not. Guess I'll try that again tomorrow.
What's odd is that when I loaded the new patch last night, the BARO reading updated from in the 60's, down to 54.xx. It seemed to update at key on. BUt then tonight once it pulled 10.35 it wouldn't update again at key on.
Is it possible the ECM just saw a glitch in that sensor or something at the wrong time? Also, a common theme is it seems to happen after an adjustment in the .bin and a chip swap. Maybe it just wasn't seated in the ZIF or something?
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