Quote:
Originally Posted by Big Tom
How often do you drive with your hood open in 70-100 mph? (70-100 mph ~ capacity of a highspeed dyno fan)
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50 mph is 75 feet per second
If your engine bay has a 1 foot area grille, then at 50 mph it will get 73 feet per second of fresh air, minus any resistance.
There's not that much free space under the hood, it's getting flushed all the time when you're moving.
When you stand still, there's the difference.
-scheherazade