S2000 Engine Management Engine management topics, map and advice.

AEM series 2 cold start refining/tuning

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Old May 3, 2012 | 04:20 PM
  #11  
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^Can you post more pictures of your setup for starting?
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Old May 5, 2012 | 06:41 AM
  #12  
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As long as this has been moved to the top, where is the battery compensation? I can select different injectors but I can't find any kind of table for battery voltage compensation.

Thanks in advance...
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Old May 10, 2012 | 08:17 AM
  #13  
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It's called battery offset primary table
I just tried a v24 firmware basemap and it is Much improved compared to older versions.

I'm retuning tomorrow so I might have more to say after.

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Old May 10, 2012 | 09:23 AM
  #14  
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What i had done was put a bigger batter with more cranking amps. Yellow Top
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Old May 10, 2012 | 09:38 AM
  #15  
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It has a lot to do with the behavior of injectors at different voltages. And each are different. 11 to 12v setting still needs to be right

There's a youtube demo on how they 'bench' the injectors in a controlled test to figure out how they react and then create a curve for it.

I just put in rdx injectors so I read about and learned some of the technicalities of how to deal with it in the ems and it would apply to stock injectors as well. The vendor provided bench results for them (they batch test and average) so I just had to enter the numbers into a table.

I think aem updated the basemap in this area so maybe they had analyzed stock injectors in a lab to get it right. It compared differently than my original map.

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Old May 13, 2012 | 08:52 AM
  #16  
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Anyone try messing with warm up enrichment to rry toget cold starting better?
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Old May 14, 2012 | 12:52 PM
  #17  
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Warm up enrichment will do nothing for your cold start...it will only help once it is cranked and running to smooth out the warm up to bring it up to normal operating temp.
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Old May 15, 2012 | 03:27 AM
  #18  
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Send me a message with your e-mail and I'll send you my AEM Calibration. It starts down to 0 degrees F or so (but that cold I needed a car charger because a PC680 didn't have enough juice). I would up having to roughly double most of the fueling at lower temperatures. It seemed the AEM base map was great in California, but not so great in places where the weather gets cold in the winter.

Tim

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Old May 15, 2012 | 06:49 AM
  #19  
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Here are screen shots of my setup from AEM Pro and AEM Tuner.
[attachment=20453:Screen Shot 2012-05-15 at 10.46.36 AM.png]

[attachment=20452:Screen Shot 2012-05-15 at 10.45.08 AM.png]

[attachment=20454:Screen Shot 2012-05-15 at 10.48.03 AM.png]


Tim
Attached Thumbnails AEM series 2 cold start refining/tuning-screen-shot-2012-05-15-10.45.08-am.png   AEM series 2 cold start refining/tuning-screen-shot-2012-05-15-10.46.36-am.png   AEM series 2 cold start refining/tuning-screen-shot-2012-05-15-10.48.03-am.png  
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Old May 15, 2012 | 09:15 AM
  #20  
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Dang that's a low crank injector....barely 3ms, are you on stock injectors?

Nm you're on like 1000cc injectors no wonder

I'm at around 6000 with rdx injectors (410) I think it can be raised a little but I'm still playing with it

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