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Old 08-29-2012, 03:02 PM   #8 (permalink)
aero guerrilla
Piwoslaw's Avatar
Join Date: Oct 2008
Location: Warsaw, Poland
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Svietlana II - '13 Peugeot 308SW e-HDI 6sp
90 day: 58.1 mpg (US)
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I'm willing to believe that VGs (or GasPods, or whatever you want to call them) may help in certain configurations, on certain cars. I'm also willing to believe that someone who knows something about both aerodynamics and A-B-A-B testing may be able to get an improvement. But unless s/he spends 8 hours per day at freeway speeds, it might not be worth the investment. The average driver who drives a block to the store 5 times a day is another story.

Reducing fuel consumption by 4% is almost believable, 19% is not. A Kammback is worth 5-10% on most cars, while a full boattail is 10-20%.

Oh, look, my horse has a VG on its forehead!

Should we park this in the U Corral? I'm not totally convinced since VG can help fuel economy, but the numbers (both FC reduction, and price) are outragous.

EDIT: Chaz got a better pic
e·co·mod·ding: the art of turning vehicles into what they should be

What matters is where you're going, not how fast.

"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell

Piwoslaw's Peugeot 307sw modding thread

Last edited by Piwoslaw; 08-29-2012 at 03:07 PM..
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