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Old 01-07-2011, 06:43 PM   #45 (permalink)
abently
EcoModding Lurker
 
Join Date: Sep 2010
Location: Australia
Posts: 80

turquoise - '97 Toyota Starlet
90 day: 41.46 mpg (US)
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Quote:
Originally Posted by Old Mechanic View Post
If you get more air mass in the cylinder with a lower percentage of fuel then you can get the same power with less fuel.
I have to disagree with this statement. Oxygen alone does not provide useful energy. Remember anything beyond (leaner than) stoich means there is an excess of air within the cylinder just taking up space and therefore reducing power output.

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