Thread: Underbody Trays
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Old 05-08-2010, 05:06 PM   #8 (permalink)
MrMiata
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Location: Mayberry, USA
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Trim rear bumper

Quote:
Originally Posted by bossfrog View Post
Well, I'll jump in for a first post on this forum. I have a Miata, and recently was rear ended. I trimmed the rear bumper cover to remove the damaged section. Conventional wisdom on miata.net is that the rear bumper acts like a parachute catching air that is flowing under the car. Anyway, after removing the lower section of the bumper cover I can see about a 1 mpg improvement in mileage on the highway, measured with the scangauge.
Bossfrog, Are you planning any other aeromods to your Miata??
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