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      06-09-2011, 09:09 AM   #43
M1M
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Drives: 2011 Competition M3
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Scientifically speaking from a engineering standpoint Cold air brings air temperatures down and makes cold air. Cold air is much denser than warm, humid air. Cooler or cold air holds more oxygen for any given amount. The more oxygen going into an engine equals the more powerful the combustion. Cooler air also gives more horsepower with the same or better fuel economy.
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