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Sal,
Some of the other numbers in that map look fishy to me. Part throttle timing numbers should not be lower than the WOT map at the same rpm. Did the 993 have a full range TPS and do acceleration enrichment based on TPS ?
According to this map, the highest compression, twin plug engine had the most WOT ignition timing....(3.0-3.6) They would not go to 30 BTDC, even with a knock sensor, unless output was higher.
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Paul
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