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Thread: TqMgmt Adv vs Advance

  1. #1

    TqMgmt Adv vs Advance

    I just wanted to check on something, and I figured this would be the best way to ask. In logging data I am logging both TqMgmt Adv (º) and Advance (º). I am seeing positive values in TqMgmt that correspond to a drop in overall advance. So, I am assuming that a postive value in the TqMgmt Adv (º) is the number of degrees of retard that Torque managment is commanding. In my case it about a max of -9º total timing on upshifts. I want to verify that is a correct assumption.

    Now, I understand that with a 4L70E or any of the "stock" 4L60 variants that you need some torque management tot keep the tranny alive. So, that is all well and good.

    One of the areas beside the upshift I am looking at improving is the inital throttle tip in. I see no TqMgmt Adv (º) like I see on upshifts. But, when you hit the throttle on intial "tip in" (say going from a dead stop and going to 99% ETC you see timing pulled down to -9 or -10º. The TqMgmt Adv (º) field stays at zero, but timing is definitely being pulled out. So, I am wondeirng if there are any other fields I should be looking or logging to see where this retard is coming form?

  2. #2
    Senior Tuner DSteck's Avatar
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    Burst knock retard.

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  3. #3
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    +1, you would find those values under spark retard/burst knock retard/base vs cylair delta.

  4. #4
    ok, so under
    engine->Spark control->spark retard->burst knock retard->Base vs CylairDelta



    I have the following field


    that section also has 3 "modifers" for RPM, IAT and ECT. Then below all of that there is a "maximum knock retard" field.


    It shows max values of 10º. But, I am seeing -10º in my captures. So, I am trying to determine the best way to approach this.

    Is the best approach to just cut the max retard field, or is it a better practice to reduce each of the fields to some fraction of what they are now. Any best practices?

    I know what I did in the Gen III stuff, but the fileds and values vary so differently from Gen III to Gen IV, I didn't want to assume...

  5. #5
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    I don't know if it is any type of best practice, but I multiplied all the tables by 0.5 and get what I consider just the right amount of burst KR with no added real knock retard.

  6. #6
    Senior Tuner DSteck's Avatar
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    Quote Originally Posted by Amric View Post
    I don't know if it is any type of best practice, but I multiplied all the tables by 0.5 and get what I consider just the right amount of burst KR with no added real knock retard.
    I did the same thing. This is what RussK on the board suggests, and I've never had a problem with it.

    DSX Tuning - Authorized HP Tuners Dealer
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