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Old 09-24-2008, 08:36 PM   #20 (permalink)
ptsmith24
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Join Date: Aug 2008
Location: Statesboro, GA
Posts: 177

El Camrino - '90 Toyota Camry LE
90 day: 32.47 mpg (US)
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Quote:
Originally Posted by Formula413 View Post
Just an update re: open/closed loop. I checked today and sure enough it stays in open loop for about 15-20 seconds after startup even when warm. I'm still inclined to think that the increased fuel burned in that period due to open loop is less then the fuel saved by not idling at the light. This would be very hard to quantify though.
But, if I understand your post correctly, that would depend on how long you would be idling...I think. I usually turn my motor off if I know I'm going to be sitting for longer than 30 seconds. Less than that, I just idle. Once I get the 'guino calibrated, I'll have to try and get some semi-exact numbers to back up the theory.
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