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  1. Replies
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    But my OS (15141668) on the LLY is ignoring the...

    But my OS (15141668) on the LLY is ignoring the B0944 values completely.

    The only work around I have found so far is to disable the idle timing by setting B0940 to 600 RPM or less. That forces it...
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    5,995

    The -5* at idle in gear is biting me now. I...

    The -5* at idle in gear is biting me now.

    I have a very low compression engine I am tuning now and at -5* the engine sputters badly.

    Where the heck does the -5 come from anyway?
  3. Thread: Table Indexes

    by Fingers
    Replies
    10
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    4,674

    Is there a shortage of memory? Provided what you...

    Is there a shortage of memory? Provided what you want to do scales correctly, yes, it is a viable solution and saves memory. The A, B, and so on maps are really just 3 Dim maps themselves.

    I'm...
  4. Thread: Table Indexes

    by Fingers
    Replies
    10
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    4,674

    I see some of the multipliers. Just didn't make...

    I see some of the multipliers. Just didn't make sense to simply stack tables without bringing in another variable as part of the stacking. I will stare at it some more, but I am now getting a feel...
  5. Thread: Table Indexes

    by Fingers
    Replies
    10
    Views
    4,674

    Table Indexes

    Reading through the tables, everything is mm3 against RPM. However some should be ECT or IAT or whatever. Is this a feature or a bug? For instance B0930 should have a temperature component as an...
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    Nothing bigger right now, but I am working on...

    Nothing bigger right now, but I am working on that. These turbos share some parts with others and function the same from a controls point of view to almost any VVT.


    VVT can be, and is, very...
  7. Replies
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    11,802

    I should say "drive pressure" instead of just...

    I should say "drive pressure" instead of just back pressure. My bad. Drive pressure is between the turbo and engine (technically back pressure) and is a necessary evil to make boost. How much evil is...
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    I should elaborate. LLY only. With somewhere...

    I should elaborate. LLY only.

    With somewhere around 70 - 80 PSI of back pressure in the exhaust there is enough force on the EGR valve to overcome the spring. Boost on the other side will help...
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    11,802

    If you play with boost, the drive pressure will...

    If you play with boost, the drive pressure will be enough to crack open the EGR.
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