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      05-29-2008, 10:30 PM   #1
backtoreality15
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gas usuage upon starting car

How much gas exactly does the car use when the engine is first started up? Is it equivalent to a 1 second WOT? I want to know to figure out whether its worth driving somewhere not too far away on campus
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      05-29-2008, 10:50 PM   #2
Swift135
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I don't know about start-up, but at idle these cars use between 9 and 10mls of fuel per minute, so you could if you got stuck in a snow storm you could car run for over 3 days continually if it meant saving your life...
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      05-30-2008, 12:48 AM   #3
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I read in a technical manual for the N54 that it takes as little as 6 seconds to break even when turning off your car vs idling. So apparently starting takes about 6 seconds of idle fuel. I routinely turn my shit off at lights if I get there when the light first turns red. With the advent of pizeo injectors, fuel management is so tightly controlled that the longer break-even times for idle vs switch off are shortened dramatically compared to standard fuel injection and especially carburation.
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      05-30-2008, 02:14 PM   #4
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Citizen Z, I have heard the same thing. In fact, a large part of the BMW Efficient Dynaics system for the gas cars is the engine cuting off at lights and turning on instantly when it is time to go. belt.
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      05-30-2008, 02:20 PM   #5
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In the manual it recommends shutting off the engine when idling.
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