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Old 03-14-2009, 04:34 AM   #23 (permalink)
cfg83
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stant01 -

Quote:
Originally Posted by stant01 View Post
Has anyone done before and after testing to see what effect these headlight covers have? I'm tempted to make a pair, but I'd like to know how effective they are.
Welcome to EM!

When you are driving, can you "see" where the top edge of your headlight meets the front of your hood? If yes, then maybe you could do a tuft test. Cover one headlight with masking tape, tight so it won't "wobble" in the wind. Then tape yarn tufts right behind the headlights and maybe for a few "rows" of tufts back. With one headlight covered, you should be able to watch the tufts and compare the benefit.

Does that make sense?

CarloSW2
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