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Thread: lm7 speed density tuning

  1. #1
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    Default lm7 speed density tuning

    looking for help trying to figure out speed density tuning it is on cos 3 and maf should be completely disabled. Would like to find out what tables all need to be altered. It is going to be boosted within a week and would like to try to get this crossed of my list sooner then later. Thank you to everyone in advance for the help. The cos 3 for my truck is below and the one I was trying to learn with that I would assume it is wrong.



    Attachment 18485
    Attachment 18486
    Last edited by 2003gmc1500; June 8th, 2015 at 04:01 PM. Reason: wrong attachment

  2. #2
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    if anyone were to have a boosted 5.3 tune with a speed density tune that would also be greatly appreciated im running cos 3150003

  3. #3
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    any luck?? Im also building a boosted 5.3 and starting to look into tuning it. Avid duramax tuner but editing tables that don't exist is hard.

  4. #4
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    If you use a 1MB PCM, make sure it's an 05 or older OS. EFILive doesnt have a COS for 06-07 OS'. Otherwise shouldn't be an issue, go SD and dial it in.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  5. #5
    Joe (Moderator) joecar's Avatar
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    Make sure you get a MAF DTC immediately on startup (this verifies that MAF is disabled/ignored), see C2901,3,4,6 and C6001.

    You want to disable CL/LTFT/STFT and OL/STFT, see B3801, B4205, B4206... and make sure B3647,9 contain no stoich cells.

    Make sure fueling errors on the rich side, see B3647,9 and B3618 (make sure PE enables, see B3616, B3613)... bump up VE B0101.

    Note: make sure B3647 makes sense (and doesn't just contain remnant data from B3605).


    You then edit VE table B0101 and Boost VE table A0009... and when done you also edit Cranking VE B0102.

    You will need to edit A0008 for cold startup.

    You will edit Boost Timing table A0010.

    Also, before proceeding you will need to fix any out-of-range value in any table in the A segment, for example:
    Out of Range calibration summary: 06:21:46 pm, Tuesday Feb 07, 2017

    EFILive Custom Calibrations
    {A0001} Forced Octane Scaler Percentage, was out of range when loaded.
    {A0002} Octane Scaler Limiter, was out of range when loaded.
    {A0004} MAP Disable TPS VE Table, was out of range when loaded.
    {A0005} RPM Disable TPS VE Table, was out of range when loaded.
    {A0006} TPS Disable TPS VE Table, was out of range when loaded.
    {A0017} N20 Monitor VE Multiplier Table RPM Enable, was out of range when loaded.
    {A0018} N20 Monitor VE Multiplier Table MAP Enable, was out of range when loaded.
    {A0007} TPS VE Table, contained one or more out of range values when loaded.
    {A0015} N20 Monitor VE Multiplier, contained one or more out of range values when loaded.
    {A0016} N20 Monitor Timing Table, contained one or more out of range values when loaded.
    ( including A00012,13 if your COS has them )


    Note: in presence of MAF DTC, the COS's retain HO/LO adaptive spark.

    Note: the 105 kPa columns of B0101 and A0009 should be identical.

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