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Thread: Rpm drop on start

  1. #1

    Rpm drop on start

    https://youtu.be/vLwdvPND1OU

    The rpm reach 1000-1100 on start, drop around 500rpm then idle around 750-800

    I want to avoid the drop around 500 because sometimes it drop below 500 and the car stop

    Where in hptuners should i go to change this settings ?

  2. #2
    this is the tune
    Attached Files Attached Files

  3. #3
    Tuner in Training
    Join Date
    Oct 2010
    Posts
    16
    friction airflow initial needs to be raised slightly and friction airflow decay needs to be lowered slightly both on the idle tab under the airflow portion tab. also check that you running airflow looks correct and that you startup airflow initial is ok and not adding or needing fuel (this table is basically the same function as you pressing the gas pedal to start the car)

  4. #4
    Advanced Tuner
    Join Date
    Sep 2013
    Posts
    427
    elerico , have a look at your idle underspeed tables also mate, are they stock?..Don't forget they also help to maintain your desired idle rpm...The dip you are talking about after start up , have you dialled in your RAF?...Noticed under your Idle airflow tab (idle adaptive airflow) the MAX/MIN P/N A/C OFF are they normally zero ? or are they suppose to be exactly like the MAX/MIN in Gear ?...Cheers Bret@ultimatelsxtuning