Seems to me instrx and d0sitmatr agree that screen will block air. They disagree about the effectiveness of design ideas and whether the idea is even worthwhile. Earlier on this thread jthistle suggested a test. Good idea too. I have a question. If we doubled and trippled-up screens to create greater and greater blockage, wouldn't that also gradually bring down the beneficial effects of venting at slow speeds or at lights? Thanks.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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