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Old 01-09-2010, 12:50 PM   #81 (permalink)
Fubeca
EcoModding Lurker
 
Join Date: Oct 2009
Location: DFW
Posts: 87

The Truck - '06 Chevrolet Silverado Ext Cab 4x4
90 day: 18.5 mpg (US)
Thanks: 4
Thanked 33 Times in 15 Posts
Quote:
Originally Posted by MetroMPG View Post
I think your relative efficiency increase will remain close to 4% regardless of ambient temperature.

Phil can correct me if I'm wrong, but when he said his cold weather aero enhancements didn't really "show up" at the pump until the return of good weather, I believe he was referring to his "previous best" (warm weather) MPG performance, not strictly a before/after comparison in cold conditions.

All else being equal, your absolute MPG will also be higher when the warmer weather returns, but the relative improvement of aerocap vs. open bed should be about the same (at the same testing speed).
This is intuitively what makes sense. I'm curious to see if it holds to be true. If it is, I'm curious what about my design makes it less effective than those of others who've experienced better gains.

Meanwhile - I'm patiently waiting for spring and enjoying the beautiful snow

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