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Old 12-06-2007, 11:51 PM   #12 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,193

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 53.56 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)
Thanks: 3,776
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Driving efficiently when nobody's looking? C'mon! :P

Cold air is good for power. The idea behind a warm air intake is to intentionally DEpower the engine, which requires a wider throttle opening to do the same amount of work. A wider throttle opening means reduced pumping losses. One of several reasons diesel engines are more efficient is because they have no throttle plate.

A grille block is just that: closing up some of the front of the vehicle ahead of the radiator. A significant amount of the total aero drag of a vehicle is airflow through the radiator. If you don't NEED the airflow, closing off that opening will help. Don't melt your engine though.
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Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: Oops, I did it again! Bought another cheap, 3-cylinder Mirage. Mods in progress...
Ecodriving test: Manual vs. automatic transmission MPG showdown



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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