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I reported the voltage at the WUR in post #17. I know there is a lot to read in this thread.
Two dyno pulls showed A/F of 12:1 throughout the range, except, strangely, it was really lean around 3500 rpm.
I'm wondering if someone adjusted the mixture setting to compensate for a bad WUR to get the A/F to look right.
Unfortunately, I don't see a connection from this scenario to "suddenly going lean at the track".
I assume that I could do a dyno run now with good A/F, but that it could go lean at any time.
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