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Old 06-19-2013, 01:26 PM   #51
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The first second the AFR is high, then settles down
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Old 06-19-2013, 01:26 PM   #52
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Originally Posted by dyn085 View Post
Have no fear, I will debate the same regardless
If your ambient isn't changing, maybe it's programmed to just be 72 degrees? I'm sure the engine could care less what ambient temps are, so maybe engineers didn't create the link? All the ECU should really care about is IAT.
I think you might be on to something here... I won't know until true ambient temps change a bit. True ambient was virtually identical to my log from yesterday.
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Old 06-19-2013, 01:28 PM   #53
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Originally Posted by darkangelism View Post
The first second the AFR is high, then settles down
Yes. But, commanded and measured AFR are so close that I wouldn't lay too much blame on the aftermarket intake. Actually, measured was better than commanded for those first couple of records.
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Old 06-19-2013, 01:31 PM   #54
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Originally Posted by Deesiel678 View Post
If (when) you log again, add fuel rail pressure and commanded AFR to your log.
Sorry, didn't see your request for fuel pressure until after the log. I'll go ahead and add that to the PID list so it's there for the next one.
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Old 06-19-2013, 01:39 PM   #55
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That definitely looks a lot better. You could be right about the octane change and the ECU re-learning. Pretty rich, imho.
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Old 06-19-2013, 01:46 PM   #56
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That definitely looks a lot better. You could be right about the octane change and the ECU re-learning. Pretty rich, imho.

I didn't change advertised octane. I went from 93 octane E0 to 93 octane E10.

Or, at least that's what the pumps said... I ran three tanks of what the pump stated was E0 at $0.20 more per gallon than local E10 price. However, during the last tank, I realized that OBDII was reporting the ethanol content as 9.8%! Now that I'm running E10, guess what OBDII is reporting? 9.8%!

Does anyone know if the ethanol % that OBDII reports is accurate? I figure it would need to be if flex-fuel were to work correctly. If it is accurate, then there's probably not much to the theory of lean AFR due to adjusting to new fuel.
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Old 06-19-2013, 01:54 PM   #57
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Which ELM327 do you guys/gals use there are so many on amazon and all have mixed reviews I value your guys/gals opinion more.
http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1

This is the one I purchased, works just fine.
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Old 06-19-2013, 01:55 PM   #58
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Gas station screwing customers?

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Old 06-19-2013, 01:56 PM   #59
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Quote:
Originally Posted by TboneZX3 View Post
I didn't change advertised octane. I went from 93 octane E0 to 93 octane E10.

Or, at least that's what the pumps said... I ran three tanks of what the pump stated was E0 at $0.20 more per gallon than local E10 price. However, during the last tank, I realized that OBDII was reporting the ethanol content as 9.8%! Now that I'm running E10, guess what OBDII is reporting? 9.8%!

Does anyone know if the ethanol % that OBDII reports is accurate? I figure it would need to be if flex-fuel were to work correctly. If it is accurate, then there's probably not much to the theory of lean AFR due to adjusting to new fuel.
I need to pay closer attention to my pump. I usually get gas from the same station, Quik Trip, and always 93 octane. The most recent log I have shows 34.51% (part of the same log as the one I posted on page 1).
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Old 06-19-2013, 02:15 PM   #60
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Quote:
Originally Posted by TboneZX3 View Post
I didn't change advertised octane. I went from 93 octane E0 to 93 octane E10.

Or, at least that's what the pumps said... I ran three tanks of what the pump stated was E0 at $0.20 more per gallon than local E10 price. However, during the last tank, I realized that OBDII was reporting the ethanol content as 9.8%! Now that I'm running E10, guess what OBDII is reporting? 9.8%!

Does anyone know if the ethanol % that OBDII reports is accurate? I figure it would need to be if flex-fuel were to work correctly. If it is accurate, then there's probably not much to the theory of lean AFR due to adjusting to new fuel.
Did your mpg change from E0 to E10, that is the biggest change, should be a couple mpg different
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