Quote:
Originally Posted by BRAN
"... a cooler engine will have higher volumetric efficiency. Lower temperatures will also allow for more timing without detonation since the ECU is capable of changing timing based off of fuel quality and engine operating temperature. This can result in higher horsepower and better fuel economy as well..."
Theory or Reality?  |
It is real, but the gains are very small, 2-3 HP on a dyno. Bigger advantage is reducing the heat stress on the engine castings and lowing the oil temp by 25F, which is a huge advantage.
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