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Does my idle look irregular or am I just going nuts?

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Old 09-18-2008, 05:05 AM
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Default Does my idle look irregular or am I just going nuts?

In the video I'm showing my idle that I call "fluctuating". If you then listen carefully I go to the back of the car and you can hear some misfiring through the exhaust.

Would a burnt exhaust or effed intake valve have any play here, or is this not enough to think that?

BTW want to thank Jordan, (DocSlow...) for all his help.

FOR those who ask... here are numbers

at idle in block 002 engine load is 16.5-18.0%, injection timing is 1.70-2.04ms it fluctuates MAF is 3.94-4.06 fluctuating....

with unisettings i then lowered the fuel enrichment @ warmup... and the car got slightly steadier, but not much

16.5% idle load, 1.70 ms, and same G/s, basically the same thing.

Numbers from block 032
032,

-1.7%

-7.0%

-2.3%

-8.6%<ul><li><a href="http://videos.streetfire.net/video/Straight-Piggies-Twin-One_184801.htm">http://videos.streetfire.net/video/Straight-Piggies-Twin-One_184801.htm</a</li></ul>
Old 09-18-2008, 05:41 AM
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Going off the tac, it looks fine.
Old 09-18-2008, 05:42 AM
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really? lol. to me that is fluctuating... is that being neurotic?
Old 09-18-2008, 05:48 AM
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Default I think it might be. Mine looks like that and it runs perfect. That needle will never be perfectly

still like a civic or something. Have you been having problems like misfires tripping a CEL at idle?
Old 09-18-2008, 06:38 AM
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Default My idle doesnt hunt at all but I'm only APR Stage 1.

I think the idle gets increasingly harder to control when changing injectors and MAFs since the resolution at low g/s is less than with the OE MAF.
Old 09-18-2008, 06:41 AM
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Default Dude its fine, like I said this happens when you change injectors. Put your AC on and it will

make it semi-better when you put a load on the motor.
Old 09-18-2008, 07:59 AM
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Big injectors cause misfires.... i dont think it can be avoided really...
Old 09-18-2008, 08:04 AM
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Mine is not smooth has slight fluctuations but the car runs excellent. Normal for stage 3 tune
Old 09-18-2008, 08:07 AM
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Default Looks fine ffrom the tach. Any missfires (block 15/16) at idle? Like Josh said...

AC, or even putting the clutch in will usually increase the load enough to smooth it out.
Old 09-18-2008, 08:15 AM
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Default Does it sound like this monster?

<ul><li><a href="http://www.youtube.com/watch?v=zlIIxk5MrvQ&amp;feature=related">http://www.youtube.com/watch?v=zlIIxk5MrvQ&amp;feature=related</a</li></ul>


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