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Datalog Request - DBW S2000 - Throttle Tip-In

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Old Jun 24, 2015 | 01:24 PM
  #11  
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Originally Posted by Gernby
Is there some reason why you don't want to fix the problem with your knock control, which is gleamingly obvious in your datalog?
The knock control table cells you suggest editing start coming into play at about 90kPa. The lean AFR spike in my car begins at 40kPa and peaks at 70kPa. How is what you suggest going to help?

Also, the lean spike (AFR > 15) lasts about 300ms.
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Old Jun 25, 2015 | 07:34 AM
  #12  
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This will be my last post in this thread, since I could have fixed your problem myself in less time than it's taken to argue with you about it. If you don't want to actually fix your driveability issue, then don't. However, if you want to actually fix it, quit thinking about this AFR spike for a minute, and try what I've suggested. You will still see the AFR spike in datalogs after fixing the knock retard issue, BUT your hesitation / bogging issue will be gone.
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Old Jun 26, 2015 | 02:34 PM
  #13  
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I'm not claiming that your lean spike is or isn't causing a hesitation issue but here's a good read on transient fueling (accel fuel, wall wetting, whatever you want to call it).

http://www.megamanual.com/ms2/xtau.htm
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Old Jun 26, 2015 | 11:35 PM
  #14  
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Originally Posted by TheCarGuy2021
I'm not claiming that your lean spike is or isn't causing a hesitation issue but here's a good read on transient fueling (accel fuel, wall wetting, whatever you want to call it).

http://www.megamanual.com/ms2/xtau.htm
Thanks I read that years ago. And I linked to it in one of the other threads.
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Old Jun 27, 2015 | 01:31 AM
  #15  
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5degrees of timing in these motors is gonna be noticeable.
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