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Old 06-02-2010, 11:44 AM   #11 (permalink)
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I wonder... is there any way to use the ScanGauge to tell when the ECU has started enriching the mixture due to excessive throttle position? Obviously full throttle open loop is one sign, but are there earlier indications, such as ignition timing?

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Old 06-02-2010, 05:52 PM   #12 (permalink)
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Originally Posted by PaleMelanesian View Post
Lower rpm is better. 5th gear is better, until the point where you cannot maintain the speed needed.
perfect , thanks for answer
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Old 06-02-2010, 08:06 PM   #13 (permalink)
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I think full throttle will be the tell tale sign, not much more complicated than that.

a favorite guage of mine is the LOD guage, which tells you the load percentage on the engine. I would assume keeping the LOD guage high in top gear when you need the power is the way to go..Too much on an auto, though, and you downshift.
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I think you missed the point I was trying to make, which is that it's not rational to do either speed or fuel economy mods for economic reasons. You do it as a form of recreation, for the fun and for the challenge.
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Old 06-03-2010, 10:11 AM   #14 (permalink)
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Quote:
Originally Posted by RobertSmalls View Post
I wonder... is there any way to use the ScanGauge to tell when the ECU has started enriching the mixture due to excessive throttle position? Obviously full throttle open loop is one sign, but are there earlier indications, such as ignition timing?
That's just it, the loop gauge. I find that Open Loop happens consistently at >95 LOD on my car.

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