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Old 07-10-2008, 09:00 PM   #53 (permalink)
JamesLaugesen
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Join Date: Jun 2008
Location: Sydney, Australia
Posts: 25

Buell XB12X - '06 Buell XB12X
90 day: 49.02 mpg (US)

Grand Cherokee WH - '06 Jeep Grand Cherokee WH (WK Export)
90 day: 15.46 mpg (US)

Honda CRV RD - '05 Honda CR-V 4WD Sport
90 day: 24.44 mpg (US)
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Quote:
Originally Posted by superchow View Post
I don't think fuel is used to lubricate the compression rings, but I am not sure. I remember driving a minivan (2004 Chrysler T&C) for work once and when coasting at highways speeds the instantaneous gas mileage indicator always showed "--.-". It could be that there is just a minute amount of fuel injected, but it seems less likely to me.

Any SG peeps here that can confirm or debunk?
Thanks, after some google it does look like the civic shuts the injectors off completely (and the 2007 apparently has quirk, delay engaging them again?).
I have experience mapping bikes / "high performance" engines, and we'd definitely never completely remove fuel, but with tighter emissions standards it makes sense I guess. Would be interesting to know exactly how the engines can get away with it.
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