Quote:
Originally Posted by SJFGTO
Your engine does not make more horsepower in cold weather it operates more efficiently at certain ambient temperatures as governed by the tune.
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Actually this is incorrect, the engine actually does make more horsepower. Been known for year that it does. For every 10° decrease in ambient outside temps there is a 1% increase in HP output.
Cold air is more dense versus hot air.
Go from 100° ambient to 50° ambient and it is equal to a 5% increase in power. On a 450hp engine that is equal to 20hp gain.
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