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Old 12-22-2014, 06:30 PM   #22 (permalink)
EcoModding Lurker
Join Date: Nov 2013
Location: Delaware
Posts: 29

Sussie - '93 Toyota Pickup Dlx
90 day: 23.55 mpg (US)
Thanks: 6
Thanked 14 Times in 10 Posts
Originally Posted by aerohead View Post
GM's patent drag table indicated a 5.6% drag reduction,and Ford's testing indicated a 7% drag reduction for a full tonneau.
So maybe 2.8-3.5% better mpg on the highway.More the faster you drive.
Darn I was hoping for ~4% but I don't drive nearly fast enough to get that out of my set up. I'll rock the full cover for this tank and may try going for the half on the next. If its not enough ill add a Kam back to the cab that will bolt to the cover for extra aero, but probably a cab wing for testing. well it is what it is. If the air don't like it, it don't like it.
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