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Thread: Rich Idle - Please Help!

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  1. #28
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    Join Date
    Jan 2008
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    Connected the LC-1 to the scanner this week and did a short logging session. Yesss, it worked! My wideband scan shows about .1-.2 lower than the XD-16 gauge. I assume the gauge is correct since it has a digital connection to the LC-1. I'll need to fix that, but the results are still pretty darn close.

    So back to topic... Looks like I'm averaging around 13.5-7 AFR at idle. It seems to bounce all over the place. This was in CLSD so the front O2s/LT headers are probably causing some of my richness. Next step is to turn off the O2s and do my first OLSD AutoVE tune.

    On a side note here's a summary of my WOT readings:

    Code:
    RPM	Commanded	AFR	Error
    3600	10.006452	11.3	13%
    4000	10.006452	11.3	13%
    4400	10.006452	11.6	16%
    4800	9.907182	12.0	21%
    5200	9.822727	12.8	30%
    5600	9.571667	12.9	35%
    6000	9.571667	13.3	39%
    Holy smokes! It leans out like a big dog past 4800 rpm. Shouldn't go any lower than 12.2 or so on the upper RPMS, but I'm seeing 13.3.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Last edited by white01ss; April 25th, 2008 at 04:56 AM. Reason: Fix table
    2001 Camaro SS
    Built 370 LQ9, Ported 243s, D-1SC 14 psi. 691 rwhp, 643 rwtq
    Best time: 11.6@124 on nitto drags with a 2.1 60'
    "if you're gonna build a time machine into a car, why not do it with some style." Dr. Emmett Brown

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