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3.63FATS .. is this valid ? i used the weaselworks fast calc..

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Old 12-26-2005, 01:23 PM
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Default 3.63FATS .. is this valid ? i used the weaselworks fast calc..

Sunday 25 December 2005 11:19:22
8D0 907 551 H 2.7l V6/5VT G09 0003

Group A: '003
Engine speed Mass air flow Throttle angle Ign timing
TIME g/s 0-5deg=closed deg
time RPM MAFg/s % igntime
2.95 4080 199.00 100 3.8
3.55 4520 207.81 100 6.8
4.10 4880 224.47 100 6.8
4.67 5240 239.53 100 12.8
5.26 5640 238.08 100 12
5.87 5960 235.28 100 15
6.49 6320 227.11 100 15<ul><li><a href="http://www.weaselworks.net/cgi-bin/fats.cgi">http://www.weaselworks.net/cgi-bin/fats.cgi</a</li></ul>
Old 12-26-2005, 02:01 PM
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Default wouldn't you need at least one data point past 6500rpm to make it accurate at all?.....

I would assume your acceleration would slowly be decreasing as RPMs go up....if the calculation tried to extrapolate from your 6320 data point, wouldn't you get an artificially fast FATS?
Old 12-26-2005, 02:40 PM
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that's why i asked .. this is my belief also .
Old 12-26-2005, 03:02 PM
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Using the above and below 6500 numbers in the log you Emailed me it comes to 3.78... not bad
Old 12-26-2005, 03:13 PM
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Default for a TRUE FATS reading, yeah, you'd need something past 6500

I've done 4/5 runs that haven't made 6500, and I've discarded them.

But, having said that, who made 6500 the magic number?
Old 12-26-2005, 03:37 PM
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Your 6600 number is the closer. Using Noah's calc with that number I get 3.81. Accurate enough
Old 12-26-2005, 05:24 PM
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Default mm not bad huh ? this is @ 20psi .

what do you think about the CF's ?
should i lean it out a bit .. put it around -20.2% or so ?
not sure if should give it more incresing so it gets enough for better timing .. now it's @ 84.4% .. what do ya think ?
Old 12-26-2005, 05:28 PM
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I still want to see O2's pre and post. Email them to me.
Old 12-26-2005, 05:51 PM
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Default Not bad at all...

If you have RS4 IC's you can bring it to 22psi and run a 3.5 or so. I wouldn't try to lean it out until you've got everything else as you want it. It's at a fast and safe place now.
Old 12-27-2005, 04:04 AM
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oh ..sorry , forgot


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