I'll have to see the actual log to know. I assume the Holley has the ability to adjust the sample frequency (my name for it, don't know the technical term). Mine does, and depending on that setting you can have a pretty spiky "looking" log, but the engine is actually running very well. You can slow it down to where it doesn't have the spiky appearance. Mine samples in milliseconds, so there's a LOT going on in that brief amount of time. If the engine is running smoothly, it's likely a function of the sample rate.
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'65 Tempest 467 3650# 11.30@120.31
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