The datalog tonight seems to show I'm getting plenty of fuel at the top of 2nd and 3rd, but there was a momentary spike in a narrow RPM band that has me puzzled.

The lean spike is the red text below in the image on the left. Please note in the photo on the right, that the A/F fattened back up and was very healthy (too rich) as it shifted into 4th.

By the way, my boost gauge was showing a peak of 23 psi on the run and it was 50F at the time.

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