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Old 03-11-2015, 12:08 AM   #14 (permalink)
Focus-Ak
EcoModding Apprentice
 
Join Date: Sep 2014
Location: Alaska
Posts: 100

n/a - '05 Ford Focus ZX3
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Hi Spaceman,

See "Brake specific fuel consumption explained": http://ecomodder.com/forum/showthrea...ned-30791.html

Other searches in this forum will also be helpful. The best search terms are "specific fuel consumption" or BSFC.

One thread has a series of BSFC curves for various cars (but unfortunately not our Duratec Foci). Generally, the best rough guess is -- I think -- 65% to 80% load. There can be hidden sweet spots in the curves, and RPM is also a factor. For most of us the 1,000 to 2,500 range will be the most important.
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