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Old 02-13-2009, 04:21 PM   #14 (permalink)
winkosmosis
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Quote:
Originally Posted by Quattro View Post
I took it off last night. It is fixed position, and can't be angled. That isn't to say some custom brackets couldn't be made to change the angle!

Out of curiosity, what angle would I likely benefit from having?
The best I can do is visualize airflow.. To me it seems that if you angle it at maybe 15 degrees, it will pull down airflow coming over the roof. With that stream of air going down at that angle, it might create a virtual kamm back behind the 4Runner, and air going above the deflector would go down the virtual slope of air.

Or, maybe the vacuum behind the car will suck air through it, and the air would expand and have a decent impact on the low pressure back there, but it would do it without swirling around in a vortice
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