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Old 06-02-2013, 06:32 PM   #1 (permalink)
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Join Date: May 2012
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sizematters - '08 smart 4-2 passion cabrio
90 day: 51.99 mpg (US)

escape - '06 Ford Escape xlt
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Dam, It works! (Air dam on Smart Fortwo: 3-4% MPG improvement)

I just made an air dam out of some lawn edging. A B A testing shows 3.16%-4.2 % (avg 3.73%) better mileage. It took a whole half hour to make and install it, I should have done this a long time ago! Chumly

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Old 06-02-2013, 06:48 PM   #2 (permalink)
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Old 06-03-2013, 09:52 PM   #3 (permalink)
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Thanks for posting!

What speed did you test at?

Do you have a picture showing the whole front of the car?
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Old 06-03-2013, 10:01 PM   #4 (permalink)
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I was anticipating test results and procedures...please?
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Old 06-04-2013, 11:34 AM   #5 (permalink)
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sizematters - '08 smart 4-2 passion cabrio
90 day: 51.99 mpg (US)

escape - '06 Ford Escape xlt
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I drove the car about 20 miles before any testing so it was completely warmed up. A is with the dam and B is without. I reset the scangage at a set point after getting up to speed and set the cruise control at 60 to be consistent, drove 5 miles one way, turned around in a parking lot and returned to set point on all three runs. Temps were the same on all three runs with a stop of maybe 5 min. between runs to take off dam and to reinstall it. On the last run I actually had to pass a car but I didn't need to touch the throttle, I don't think it should have made much difference. A=46.1 mpg, B=44.2 mpg and A=45.6 mpg. Chumly
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Old 06-04-2013, 11:54 AM   #6 (permalink)
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How did you mount the edging to your bumper? We would love to see more pictures of the installation!
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Old 06-04-2013, 12:14 PM   #7 (permalink)
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I'd like to put this on the front page, if you like. Please post another pic or two showing the whole front of the car.
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Old 06-04-2013, 12:23 PM   #8 (permalink)
EcoModding Lurker
 
Join Date: May 2012
Location: Evansville Ill.
Posts: 96

sizematters - '08 smart 4-2 passion cabrio
90 day: 51.99 mpg (US)

escape - '06 Ford Escape xlt
90 day: 26.78 mpg (US)

Buick - '04 Buick Park Avenue Ultra
Team Turbocharged!
90 day: 27.26 mpg (US)
Thanks: 196
Thanked 23 Times in 16 Posts
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Old 06-04-2013, 12:32 PM   #9 (permalink)
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
Team Metro
90 day: 67.58 mpg (US)

ForkenSwift - '92 Geo Metro EV
Last 3: 95.68 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 38.25 mpg (US)
Thanks: 1,979
Thanked 4,684 Times in 2,343 Posts
Thanks! The black pizza pans look good, too!
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Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
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Old 06-04-2013, 12:39 PM   #10 (permalink)
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Join Date: May 2012
Location: Evansville Ill.
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sizematters - '08 smart 4-2 passion cabrio
90 day: 51.99 mpg (US)

escape - '06 Ford Escape xlt
90 day: 26.78 mpg (US)

Buick - '04 Buick Park Avenue Ultra
Team Turbocharged!
90 day: 27.26 mpg (US)
Thanks: 196
Thanked 23 Times in 16 Posts
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