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Thread: Cold Start Russ k performed log

  1. #1
    Senior Tuner Ben Charles's Avatar
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    Cold Start Russ k performed log

    Ok I performed a Cold start russk Idle config found below, started up well and held a good idle. (IDLE1)
    I adjusted the IAC and notice the high count, something is up with the fuel trims too (split between banks)

    Next I let the car set for about 3 minutes and then recranked it with no ECU changes. (IDLErun2warm)
    Notice the IAC counts this time, how much lower the desired air is, and the Fuel trims look better. Started up well but held a high idle for several seconds before returning to desired idle (to much airflow IMO)
    AGAIN I changed nothing, only restarted the car.

    Opinions? Again notice the big difference between IAC counts, and desired airflow at the same ECT (operating temp), and fuel trims.

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  2. #2
    Senior Tuner Ben Charles's Avatar
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    Just for fun, after typing all that I decided to run the car again.

    This log very similiar to the second log above, (at least its not completely different than the other 2)

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    96 TA Blown/Stroked, 4L80E/Fab 9
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    Custom Mid Engine chassis, AKA GalBen C

  3. #3
    Senior Tuner Ben Charles's Avatar
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    Going to try something and report back going to decay out (delay) the startup air till the IAC count settles in. Also going to take a little startup airflow out of the 17x temp.

    UPDATE: Ok that didn't work like I thought it would, HOWEVER, I noticed the IAC count will follow the Idle desired. ALWAYS learning
    Last edited by Ben Charles; 01-12-2012 at 05:59 PM.

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  4. #4
    Senior Tuner Ben Charles's Avatar
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    Anyone know why I would get different idle desired values when doing the idle config (when I change nothing in the tune of mechanical)?

    Email Tunes, [email protected]
    96 TA Blown/Stroked, 4L80E/Fab 9
    15 C7 A8 H/C 2.3 Blower/PI
    14 Gen 5 Viper
    Custom Mid Engine chassis, AKA GalBen C