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Originally Posted by metalshark
with every car I know a warmer intake air temp actually chokes the engine, causes misfires, over heating, decreased efficiency, and many other bad things. (usually referred to as heat soak)
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All the conditions you stated happen under high loads.
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so why do you guys close off all heat dissipation holes, and use warm intakes?
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Because most of the driving is done at light loads.
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in high performance engines heat dissipation is usually used for better efficiency, and it was noted that fire burns more efficiently with cooler surrounding air.
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Performance, not efficiency.
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warmer engine bay and hot intake air sounds bad and puzzles me.
Im pretty sure heat soak negatively affects MPG
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It depends on your driving behavior, and also your engine specifics.
Best case scenario you'd have a vacuum actuated flap connected to the intake manifold so when you jump on it you get cold air in, but warm air when cruising.