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Old 09-02-2010, 12:20 PM   #1 (permalink)
Fr3AkAzOiD
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Join Date: Jul 2008
Location: Raleigh, NC
Posts: 259

Cobalt XFE - '08 Chevrolet Cobalt XFE
Team Chevy
90 day: 41.1 mpg (US)

'05 Malibu V6 Tow Vehicle/Track Car - '05 Chevrolet Malibu LS V6
90 day: 23.12 mpg (US)

'08 XFE average for 2013 - '08 Chevrolet Cobalt XFE
90 day: 41.1 mpg (US)
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Aero mod gains below 55 mph?

95% of my driving is at 55 mph or less.
Would I see any gains for aero mods?

I did to a lower grill block a while ago and saw minor improvements but that didn't cost me anything.

Debating on pizza pan hubcaps and rear wheel skirts but I don't want to drop $50 plus the time to make it if I am only going to end up seeing a 0.5 mpg improvement.

I have looked at other threads with peoples A-B-A runs and some show gains of 1.5 - 2.5 mph while others are only claiming very slight improvements at 55mph.

Opinions?

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