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Old 06-13-2009, 11:56 PM   #26 (permalink)
volvompg
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Join Date: May 2009
Location: Kansas City, MO
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o=o> the box - '97 volvo 850
90 day: 27.62 mpg (US)
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This is really interesting because I have somewhat of a "ram air" set up taking in air from directly behind the grill. I think that FrankLee and Unchosen both have their points here. To maintain a given speed with a ram air set up you would just let up on the throttle slightly; however, if we added in the variable "traffic conditions," which sometimes require more acceleration than we'd like for FE, a ram air set up would allow you to open the throttle less for a given acceleration.
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