Quote:
Originally Posted by mpg_numbers_guy
Nice! Makes me wish I had tried harder to get a better on on my Civic. It's looking good!
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I took it off today because it was warping enough to burst all the duct tape. It just kept warping over time. I think the paper wrapped foam board is probably not a great candidate. But I NEED another model because without the spoiler again I struggle (again) to get over the 70mpg threshold. Today's morning run yielded 68.xx again. I was well over 70 in that same trip average when I took the spoiler off this morning. These are not scientific data points, obviously, but given that this is the design that tested approx 6.5% better in coast down testing at El Mirage, I am confident I am probably seeing the costs of not running the spoiler, at least in part. I may fiberglass my original cardboard template today.