Quote:
Originally Posted by sikbrik
After that, I ran a few known trips back to back to back with roof rails off. No improvement at all.
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Correction: no ability
to DETECT a small improvement.
We KNOW there is an improvement in efficiency from removing roof racks. However a single small change will be lost in the "noise" of normal variability of your fuel consumption even on known trips.
(FYI:
http://ecomodder.com/forum/showthrea...ery-11445.html )
So it would be a mistake to discount small, well understood aero mods as a route to better fuel economy, just because
individually they may not rise above the statistical noise. Cumulatively, they will eventually make a measurable difference.