Results 1 to 9 of 9

Thread: Some questions on tuning

  1. #1
    Tuner
    Join Date
    May 2015
    Location
    Middle east, kuwait
    Posts
    100

    Some questions on tuning

    Hello there

    I have three questions :

    1: What is MBT spark ??
    2: How to know the limited of spark advance ??
    3: How to disable autoshift in 2010 charger rt ??

    ^_^

  2. #2
    Tuner Pector55's Avatar
    Join Date
    Nov 2015
    Location
    Dover, PA
    Posts
    186
    MBT - Not sure what it stands for but I do know that this table and the WOT Spark need to match or the car will take the lower of the two values.
    Suggested meanings: Monkey Boy Tuning? Minimum <mumble mumble> Timing? I don't know
    2013 Dodge Challenger RT Plus - Shaker

  3. #3
    Tuner in Training
    Join Date
    Aug 2014
    Posts
    33
    Mean Best Timing

  4. #4
    Advanced Tuner
    Join Date
    Apr 2014
    Posts
    704
    Quote Originally Posted by Turbo2.0 View Post
    Mean Best Timing
    Close.

    MBT Spark = Maximum Brake Torque Spark.

    It is essentially the least amount of timing required to achieve maximum brake torque.

  5. #5
    Tuner in Training
    Join Date
    Apr 2015
    Location
    Auburn AL
    Posts
    31
    Quote Originally Posted by B00STJUNKY View Post
    Close.

    MBT Spark = Maximum Brake Torque Spark.

    It is essentially the least amount of timing required to achieve maximum brake torque.
    This is correct.
    2006 Evo 9 2.2L 8374EFR E85 720awhp - ViPEC
    2014 SRT GC - 6.4L Magnuson TVS2300 6psi 550awhp - HPTuners

  6. #6
    Senior Tuner
    Join Date
    May 2015
    Posts
    1,908
    In practice, the MBT table will be the MAX spark allowed, no matter what you command in the WOT timing tables. In general, I have almost never seen a need to up these values, so leave these alone. Only time to visit them is if you notice your spark being maxed out and lower than your commanded PT or WOT tables, then take a look in the MBT and you may have to up the amounts.

    Disable autoshift question - you mean when in autoSTICK you don't want it to shift?

  7. #7
    Potential Tuner
    Join Date
    Feb 2016
    Location
    Belle Center, Ohio
    Posts
    3
    MBT: Mean Best Torque

  8. #8
    Tuner
    Join Date
    May 2015
    Location
    Middle east, kuwait
    Posts
    100
    Quote Originally Posted by 06300CSRT8 View Post
    In practice, the MBT table will be the MAX spark allowed, no matter what you command in the WOT timing tables. In general, I have almost never seen a need to up these values, so leave these alone. Only time to visit them is if you notice your spark being maxed out and lower than your commanded PT or WOT tables, then take a look in the MBT and you may have to up the amounts.

    Disable autoshift question - you mean when in autoSTICK you don't want it to shift?
    Yes ,, the other thing i know the autoshift based on abs for 2008 and up , that make a car strong traction control and difficult to disable

    Any idea to full disable abs ?? I know some tuner have a experience of how to disable it and i want to know, beacuse i have jeep srt8 2008 and on dyno i cant run it

  9. #9
    Advanced Tuner 15PSI's Avatar
    Join Date
    Feb 2016
    Location
    East Coast Somewhere
    Posts
    458

    MBT = Maximum Brake Torque

    MBT varies with load and speed. If timing is set so that peak pressure is at a point where the engine can best take advantage of it mechanically, this is where Maximum Brake Torque occurs. Normally around 8-16 degrees ATDC.
    2012 Mustang GT with S/C
    4Runner with S/C
    Turbo/NOS Hayabusa - 320RWHP