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Old 11-28-2013, 01:23 AM   #1 (permalink)
jeffcat
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Join Date: Oct 2013
Location: Ohio
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SuperVX - '94 Honda Civic VX
90 day: 52.17 mpg (US)
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Honda Civic VX?...better MPG by NOT clutchless coasting?

I know most people think the general rule of thumb is that when coming to a stop, pushing in the clutch and letting the car idle while it coasts down is a better approach to saving MPGs, than just letting it engine brake, but I just bought a Civic VX a few weeks ago, and while strolling across the manual, I saw this which I found rather interesting.
Quote:
3. Fuel Cut-Off Control
During deceleration with the throttle valve closed, current to the injectors is cut off to improve fuel economy at speeds over the following rpm:
-D15B7 engine 870rpm
-D15B8 engine M/T: 920rpm A/T: 900rpm
-D15Z1 engine 850rpm
-D16Z6 engine M/T: 930rpm A/T: 920rpm
So, would it be more fuel efficient to just let the car engine brake to a stop AKA drive normally, as opposed to the classic way of saving MPGs by pushing in the clutch, where the VX only idles at 600rpms?

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