cruising in neutral
04-01-2006, 07:43 PM
#41
Originally Posted by mad-dog-one,Apr 1 2006, 09:28 PM
I've got the onboard computer in my BMW Z3 that monitors fuel consumption and distance traveled to report MPG. MPG goes sky high when you coast in neutral, when compared to coasting in gear with no throttle.
It's all in how the trip computer was programmed to interpret no fuel use over a set distance and time.
04-01-2006, 09:13 PM
#42
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Originally Posted by xman03,Mar 31 2006, 10:28 AM
what do you mean uses no fuel?!.. the throttle body is always partially open and the ecu determines the amount of fuel using two factors, your rpm and the map reading. When you are rolling downhill in gear, the ecu is sensing your rpm and the vacuum reading and gives sufficient fuel where as in idle, it't the same idea but your rpm would be lower so typically the car would consume less fuel.
04-01-2006, 09:33 PM
#43
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[QUOTE=BryanH,Mar 31 2006, 11:22 PM] I'm curious, because I've never heard that the injectors shut off when you drive in gear with the throttle closed down a hill.
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