... And I read the whole article on the VGs, and they claimed that they achieved a .007Cd reduction on the Evo they developed them on, and the result of installing them was a smaller wake(in the second part of the above posted article by AutoSpeed), even with the wing considered... The makers of the AirTabs claim as much as a 7% fuel savings at a constant 120km/h... That alone, if I gained the full claimed benefit, would get me up to 32.8mpg at 80mph(30x1.07)...
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