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One piece of data missing from the dyno db is the mileage on the motor at the time of the dyno.
I believe this may be a significant factor on the S65. My suspicion is that the average for e9x M3s dyno'ed with say 10k miles would be higher than those dyno'ed with very few miles.
I think this motor gains more hp as it wears in a bit, than from say a cat back/filter/pulley.
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