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Old 10-19-2017, 02:30 AM   #19 (permalink)
JockoT
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Join Date: Jun 2017
Location: Scotland
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All That Jazz - '06 Honda Jazz i-DSI S
Team Honda
90 day: 48.72 mpg (US)
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With my small engine I find it impossible to keep in BSFC ideal zone when climbing a steep hill, unless I drop at least two gears. Then my instantaneous mpg drops to about 10 mpg. I can easily accelerate downhill in the BSFC zone and then climb the hill in 5th, at BSFC zone, at 35 mpg.
I might add, I don't pick up a huge increase in speed on the downhill sections, seldom EVER exceeding 55 mph in all my driving.
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