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Old 05-21-2012, 02:02 AM   #19 (permalink)
alvaro84
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Join Date: Jul 2010
Location: Fehérvárcsurgó, Hungary
Posts: 384

Teresa - '04 BMW F650CS
Motorcycle
90 day: 80.53 mpg (US)

The YARDIS - '99 Toyota Yaris 1.0
90 day: 59.52 mpg (US)
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Quote:
Originally Posted by serialk11r View Post
When the engine speed is lower, the throttle position needed to maintain the same manifold pressure is lower, so without an electronic throttle, a lower throttle position could be giving you less vacuum and less pumping losses (and usually will)
Interesting. I'll try to observe this phenomenon. I hope my spirit is not covered with snows of cynicism and the ice of pessimism enough to limit my improvements at FE
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