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Thread: DALs with stock MAP sensor on LNF

  1. #1
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    DALs with stock MAP sensor on LNF

    Kind of new to tuning still, but from what I understand is that on stock MAP sensors I don't want to reach 255kPa, or really get to close because that means I'm going out of range of the sensors. I've been reading a few different tuning guides and the first one I read had the DAL making its way up to 350 which seems pretty high. Then, I think it was a BYT tune I saw had DALs only reaching 325. Are DAL values directly correllated to kPa?

    My main concern is that I don't want to go out of range of the stock sensors until I upgrade to GMS1 sensors.


    Car is an 08 Cobalt SS/TC btw, mods are ZZP downpipe, ZZP IC, ZZP intake tube and HP tuners

  2. #2
    Senior Tuner cobaltssoverbooster's Avatar
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    lower the wg in 90%-100% load areas to 73%wgdc and run the dals in 100% load from 3k rpm to max using a value of 255.

    the values are not kpa...they are airflow demanded values. they represent ammount of air in some sort of value representing density or g/all cyl values. if you still fall short on boost up the dal by a value of 5 until you get close to the boost you want then use the wgdc% to make smaller adjustments until you hit the boost you wish to command.
    DD:
    2013 Chevy Sonic Turbo - Bone Stock
    Ecotec help can be found here:
    LNF-http://www.hptuners.com/forum/showth...357-LNF-Guides
    LSJ-http://www.hptuners.com/forum/showth...965-LSJ-Guides

  3. #3
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    Quote Originally Posted by cobaltssoverbooster View Post
    lower the wg in 90%-100% load areas to 73%wgdc and run the dals in 100% load from 3k rpm to max using a value of 255.

    the values are not kpa...they are airflow demanded values. they represent ammount of air in some sort of value representing density or g/all cyl values. if you still fall short on boost up the dal by a value of 5 until you get close to the boost you want then use the wgdc% to make smaller adjustments until you hit the boost you wish to command.
    Ok, just what I was looking for, thanks.

    Last question, in the torque management there is a set limit for pressure that, in mine, is set at 240kPa. Will this actually stop me from boosting over 20psi if its actually commanding more than this?

  4. #4
    Senior Tuner cobaltssoverbooster's Avatar
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    If your talking about the one I have in mind, Raise to the 511.xxxxxxxxx value from the boost sensor below.
    DD:
    2013 Chevy Sonic Turbo - Bone Stock
    Ecotec help can be found here:
    LNF-http://www.hptuners.com/forum/showth...357-LNF-Guides
    LSJ-http://www.hptuners.com/forum/showth...965-LSJ-Guides