Huh
Sorry I don't understand the question!
There is one best ignition timing for any set of engine conditions, if you radically change the engines operating conditions you will need to adapt the timing or you will either lose power or in extreme cases cause engine damage.
Some ignition advance may be good in some conditions, but too much ignition advance rapidly increases cylinder temps and can lead to detonation. Timing that is too late can result in high EGT's and burned exhaust valves, and an engine that is vary flat and does not want to rev.
Larry
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