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Thread: Help with startup Airflow

  1. #1
    Tuner in Training
    Join Date
    Oct 2013
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    Help with startup Airflow

    Please help, this is driving me crazy lol. Gen3 LS1 btr stage 3 cam. LSA supercharger, NW102 throttle body. Manual trans

    When I start RPM goes high then dips low. Log and tune postedidle air test.hptidle flare.hpl

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
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    8,498
    If it's speed density only, make sure you fail the MAF correctly.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

  3. #3
    Tuner in Training
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    Oct 2013
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    Ok I made sure its in SD only. I am not runnig MAF. I will gladly pay for help!

  4. #4
    Tuner in Training
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    Oct 2013
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    Got the startup flare to not be so dramatic my increasing the Startup flare control table. still like to dip though. RAF table is correct now. Any advise? I just wanna drive without it wanting to die

  5. #5
    Tuner in Training
    Join Date
    Apr 2017
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    Increase timing

    Quote Originally Posted by brycedrue View Post
    Got the startup flare to not be so dramatic my increasing the Startup flare control table. still like to dip though. RAF table is correct now. Any advise? I just wanna drive without it wanting to die
    I would check your timing table. I have same cam in auto and my tunes are posted on this forum. My car idles fine and at startup idle is 950 and slowly comes down to 750 per tune as it warms up at idle. In gear idle is set at 705 rpm. I am running stock air box and filter.

    Steve

  6. #6
    Quote Originally Posted by 5FDP View Post
    If it's speed density only, make sure you fail the MAF correctly.
    What exactly needs to be done to fail the MAF correctly?

  7. #7
    Potential Tuner
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    Dec 2018
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    Chas, SC
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    Post your tune file.

  8. #8
    Tuner in Training
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    Oct 2013
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    its posted

  9. #9
    Tuner
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    Dec 2018
    Location
    Washington State
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    Not failed correctly

  10. #10
    Tuner in Training
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    Oct 2013
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