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VAG Data - should I be concerned? I've already STFA btw...

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Old 04-29-2003, 11:11 AM
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S4J
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Default VAG Data - should I be concerned? I've already STFA btw...

<center><img src="http://pictureposter.audiworld.com/33465/vag_001.jpg"></center><p>This is my first time logging with a VAG (took this one on my way to work to try things out), so I'd appreciate any advice...kinda worried about the spike...

I have a GIAC-X version 8 (to the best of my knowledge). Recently had the MAF and a couple O2 sensors replaced.
Old 04-29-2003, 11:23 AM
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Default Doesn't help.. RPM goes on the bottom folks!!!

Everything looks fine, the spike was probably during a shift..

Do you "Feel" anything wrong, because I don't see anything wrong, but again this chart tells us little
Old 04-29-2003, 11:25 AM
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haha... i think i need you to walk me through logging 101 Tory.
Old 04-29-2003, 11:37 AM
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Default Something doesn't look right.

I take it you subtracted ambient pressure from the boost readings? Otherwise they should be around 1000 mbar off throttle and peak somewhere above 2000 mbar.

The MAF readings of 350g/sec are way too high for a chipped S4.

-Dave Pramanik
Old 04-29-2003, 12:25 PM
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Default Re: Something doesn't look right.

Correct, I subtracted the ambient temperature. As for the MAF readings, I may have taken that data from the calculated maf reading as opposed to sensor...should calculated be that high though?
Old 04-29-2003, 12:29 PM
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Default Calculated shouldn't be that high... but I've seen it happen before.

Log datablock 003 to get actual MAF readings as well as ingition timing.

-Dave Pramanik
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