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RAFIG and RAFPN process

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Old Mar 17, 2009 | 08:02 PM
  #11  
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Looks like your VE table is off by that log... YOur commanding 13.4 but your actual is 18ish... IMO you need to revisit your VE tuning... YOu don't run a MAF do you?
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Old Mar 17, 2009 | 09:41 PM
  #12  
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no I don't. The problem is the VE is right where I want it when it's warm. One thing I noticed is the Commanded AFR is never what I have in table B3647. It's always something different.
It's only that lean on cold starts. AT first its okay but after a few seconds the idle starts to lope like it should and then it leans way out.
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Old Mar 17, 2009 | 09:42 PM
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Originally Posted by viciousknid
no I don't. The problem is the VE is right where I want it when it's warm. One thing I noticed is the Commanded AFR is never what I have in table B3647. It's always something different.
It's only that lean on cold starts. AT first its okay but after a few seconds the idle starts to lope like it should and then it leans way out.
Do you have your idle fuel trims enabled?
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Old Mar 17, 2009 | 09:51 PM
  #14  
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The links above only mention Idle LTC and STC P/N A/C off from what I read over and over again.
I also had IAC Final Airlow sum.
And then everything else listed on that dashboard
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Old Mar 17, 2009 | 09:58 PM
  #15  
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I'm going back into my old tunes right now to check over the VE table at idle. I'll probably just recopy that section from a tune when it was good and see if maybe I botched it.
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Old Mar 17, 2009 | 09:59 PM
  #16  
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Originally Posted by viciousknid
I'm going back into my old tunes right now to check over the VE table at idle. I'll probably just recopy that section from a tune when it was good and see if maybe I botched it.
Just increase the bottom to rows by 10% and see what that does real quick...
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Old Mar 17, 2009 | 10:10 PM
  #17  
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Some of the values were quite different so I copied up to 1200 rpm from another table. Can't notice a lot of difference cuz the sections where it idles were about the same, but I'll check in the morning on a cold start.
I still don't understand why the commanded AFR doesn't match what I have in Commanded Fuel vs RPM
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