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  1. Replies
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    ( idle tuning is an art ) Post your stock tune...

    ( idle tuning is an art )

    Post your stock tune also.

    Try reading this (you will have to translate some stuff to E38): Idle-Tuning-Helpful-Info-Inside

    Basically: you have to make...
  2. If you're running catalysts, why did your tuner...

    If you're running catalysts, why did your tuner disable cat protection (should leave it enabled, it will kick in when needed)...?

    There are very many changes in the tune file, imho many of those...
  3. Remind me again what the first 2 tunes are:

    Remind me again what the first 2 tunes are:
  4. Try the stock tune as sanity check, log the...

    Try the stock tune as sanity check, log the following pids (from the stock tune) using V7 (meaning V7.5) and post here:

    SAE.RPM
    SAE.ECT
    SAE.IAT
    SAE.MAF
    SAE.MAP
    SAE.LAMBDA
    SAE.LONGFT1/2...
  5. [QUOTE=raceghost;255011]Bump for any info or...

    What did you see that indicated broken MAP sensor...?



    I'm not sure which connector you mean here.
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    It generates new coefficients for the polynomial ...

    It generates new coefficients for the polynomial that that zone represents (i.e. it does not just average over the zone, it changes the curvature of that zone).

    If you look at the coefficients...
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    Where the the 4L80E tune come from...

    Where the the 4L80E tune come from (year/model/vehicle)...?
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    Can the TCM see VSS...?

    Can the TCM see VSS...?
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    You have to already know the address, word size,...

    You have to already know the address, word size, whether it's signed/unsigned, whether it's integer, or fixed/floating point of the object in your particular OS.

    GMC-2002-Dmax said it best.
  10. See your other thread on this topic.

    See your other thread on this topic.
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    Are you generating the coefficients after you...

    Are you generating the coefficients after you edit the VVE table?
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    Doing BBL (black box logging), FSV2 displays live...

    Doing BBL (black box logging), FSV2 displays live real time data on its LCD while recording.
  13. I've been looking, I don't have an answer yet.

    I've been looking, I don't have an answer yet.
  14. I'll try to duplicate the VVE table "glitch"...

    I'll try to duplicate the VVE table "glitch" you're seeing.
  15. +1 on what statesman said. Axis is pressure...

    +1 on what statesman said.

    Axis is pressure delta across injector, i.e. rail pressure minus manifold pressure.

    ( Note that in manifold referenced FPR system the delta is constant .)

    Flowrate...
  16. Sticky: Below 4K: VE during airflow/airmass transients,...

    Below 4K: VE during airflow/airmass transients, MAF during steady state.
  17. John, Thanks.

    John, Thanks.
  18. See on hear how LC-1 is done, LC-2 is the same. ...

    See on hear how LC-1 is done, LC-2 is the same.

    Lemme see if I can find the post.
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    Kyle, What was the donor vehicle (year/model)...

    Kyle,

    What was the donor vehicle (year/model) for the engine, what smog devices was it equipped with? Do you know its VIN?

    The tune doesn't know the difference between CA and other catalyst.
  20. Find the correct VVE table. Pick a region and...

    Find the correct VVE table. Pick a region and increase by 5%, calculate coeffs, do cal-only flash, test drive with failed MAF (DTC), should observe LTFT's pulling fuel approx 5%, if not need to find...
  21. Gen IV factory stock tunes are usually pretty...

    Gen IV factory stock tunes are usually pretty good.

    Are HO2S11/HO2S21 voltages switched several times per seconds or faster?
  22. Some comments: Shorty headers would increase...

    Some comments:

    Shorty headers would increase airflow (cylinder airmass) by less than 5% (they are not much better than factory headers.

    Above 4000 rpm: MAF only.
    Below 4000 rpm: MAF for steady...
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    Sticky: Throttle Downshift tables: I have to look up...

    Throttle Downshift tables:
    I have to look up their id numbers.
    These look like the vss/tps upshift tables with the axes swapped.

    Inertia tables depend very closely on physics of rotating...
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    The collection of small reliable gains makes...

    The collection of small reliable gains makes quickness.
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    Sticky: joecar: find a suitable place to put these: ...

    joecar: find a suitable place to put these:

    https://forum.efilive.com/showthread.php?27887-Having-trouble-lately-with-higher-IAT
    ...
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