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Dyno Testing results true?

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Old Sep 6, 2002 | 12:37 AM
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Default Dyno Testing results true?

I've seen that when some people dyno their cars they add things like a MAF, Ported Throttle Body or Intake in between runs. I was wondering if those dyno runs are true? Doesn't the computer need to learn the air volume intake and fuel curve? Even if you did reset the pc and revved it up a bit before the pull it is not going to be the same as driving it around a good ten miles is it? I was just wondering for wonders sake.
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Old Sep 6, 2002 | 06:20 AM
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Default Re: Dyno Testing results true?

I am wondering this too. I am installing LT's next month, and I am wondering how many miles I need to put on the car befoe I dyno tune with MAFT.

-Nick
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Old Dec 9, 2002 | 03:55 AM
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Default Re: Dyno Testing results true?

^^^
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Old Dec 9, 2002 | 10:32 AM
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Default Re: Dyno Testing results true?

when I've done it I've just gone back to back without any miles on it. if you run the wideband you can then correct for a/f with ls1edit.
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Old Dec 9, 2002 | 04:57 PM
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Default Re: Dyno Testing results true?

Didn't seem to hurt mine.. I have a mod by mod install / dyno chart on my website.

http://www.geocities.com/wilwaxu/about.html#formula

IMO the track is a much better indicator of a mods true performance.
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Old Dec 10, 2002 | 08:31 PM
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Default Re: Dyno Testing results true?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Doesn't the computer need to learn the air volume intake and fuel curve? Even if you did reset the pc and revved it up a bit before the pull it is not going to be the same as driving it around a good ten miles is it? </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What you have to remember is that at WOT as long as the LTRM's are at zero that the PCM will strickly use the table values for A/F and timing so the comparisons back to back are very accurate.

The PCM learning that you are concerned about will only affect part throttle A/F and this has to be re-learned, not WOT.
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Old Dec 10, 2002 | 10:01 PM
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Default Re: Dyno Testing results true?

I'd say yes and no..Some things worked for me like,lid,filter,ported TB but I installed hypertech power programming once and gained 15lb tq/5hp,a week later I went back and the power was gone.A/F's were exact but power went back to before.
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