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Type: Posts; User: kur4o

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    The recommendation from GM is at least 4 inch of...

    The recommendation from GM is at least 4 inch of straight pipe before the maf sensor, to get reasonable air flow readings. That is for the newer style slot type of mafs but I guess it can be applied...
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    Another vote for the adjustent cylinder fuel...

    Another vote for the adjustent cylinder fuel robbing.
    The lt4 settings are

    Cylinder Multiplier
    1 1.05 3 0.96
    2 1.05 4 0.97
    5 1.01 7 0.98
    6 1.02 8 0.96

    Somehow my trims closely...
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    I see right before the error occurs there are...

    I see right before the error occurs there are some random bytes changed in the message like 00 changed to 02 or 08 and the checksum byte is the same, so it it is really a checksum failure due to...
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    Here is the static flow in l/hour and...

    Here is the static flow in l/hour and gallons/hour formulas.

    I also added INJ dc% if you want to add that too.
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    Prepare to start all over with cyl trims. I...

    Prepare to start all over with cyl trims.

    I made some progress on the first cold start. Still needs some fine tunning. While experimenting it turns out that running around 20-35*C coolant at...
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    I see some errors while reading e-side only....

    I see some errors while reading e-side only. Doing some more verbose failed attemps can reveal some patterns.

    I didn`t notice but did you try to read the 95 pcm in the 94 car. It is really odd...
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    At zero mph the result will be out of range, it...

    At zero mph the result will be out of range, it needs to switch to liters/hr or galon/hr{I need to revise how these are calculated and will update the post when ready}.
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    When I made the ports equal diameter, I got all...

    When I made the ports equal diameter, I got all kind of surging problems with stock individual cyl trim settings. I had to rework the trims it all the way and now #1 gets much more air and needs more...
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    It was the LG mode that auto rescales stuff on...

    It was the LG mode that auto rescales stuff on the ui. In normal mode it is rocksolid.
    It usually happens when a parameter window changes color, after the next change of color it rescales and...
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    Please do a read on the bad car with eehack, and...

    Please do a read on the bad car with eehack, and post the verbose log. I need to see where it fails, Does it fail on the same place or fails on a fixed elapsed time, like between 20-30% . Now with...
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    The most obvious bug is the main window rescaling...

    The most obvious bug is the main window rescaling when in full screen, and there are parameters windows rescaling when changing color[the font size changes].
    It does work better with low res...
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    Great experimental finds. Even though I still...

    Great experimental finds. Even though I still insist that trims are not used until the engine run flag is not set. In your case @32*C that will be engine spining above 300 rpm for 4 low res pulses....
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    While investigating my hard start issue I...

    While investigating my hard start issue I measured my fuel pressure and what a surprise. The crap adjustable aeromotive unit holds different pressure during pump priming. On a random basis it opens...
  14. Thread: 1997 F-Body ECM

    by kur4o
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    Great find. I suspect it can be driven on a...

    Great find.

    I suspect it can be driven on a fixed interval rate or some trigger event like opti low pulse signal.

    I don`t have enough knowledge on the hardware and processor speed, but how...
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    RESERVED:2B41 fdb $34BC ...

    RESERVED:2B41 fdb $34BC ; prime pulse table multiplier
    RESERVED:2B43 fcb $C3 ; + ; initial prime pulse set
    RESERVED:2B44 ...
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    The lt4 bin also have a lot more fuel at startup....

    The lt4 bin also have a lot more fuel at startup. No idea why.

    Here is printout for most of the popular combos.
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    Your problems with hot restart might be due to...

    Your problems with hot restart might be due to crank spark advance. I ripped the settings from different calibrations.

    Interesting I am running 2 degrees at 80*C and 7* at 20*C stock. The closest...
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    It is exctly like that. I have nothing to add....

    It is exctly like that. I have nothing to add. What I mean is that you can fine tune the tables from there.

    So for now I want to end the disscusion on the pw scalar since it is all clear.

    The 2...
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    You can share the new goodies and I can try to...

    You can share the new goodies and I can try to include them in the new release. The key shortcuts are very usefull, I still haven`t had the chance to expand them to more controls.


    The 2bytes...
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    I justflash a stock bin with the beta and...

    I justflash a stock bin with the beta and evrything looks fine. There is no brick situation and the engine starts. I didn`t have the time to test functionality.
    So you can safely flash with the...
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    Here is the first beta source. If you have a...

    Here is the first beta source.

    If you have a socketed pcm and wants to be a guinea pig go ahead.
    My only concerns are for some typo errors in the patch section. Otherwise I am sure you will like...
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    You have just found another bug in the patch...

    You have just found another bug in the patch related to manual transmission. It turns out that the routine that makes the switch between maf and speed density modes doesn`t run with manual bin. An...
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    I already had posted a printout of the bin here...

    I already had posted a printout of the bin here here

    You can search it for injection or injector to find the offset tables.
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    It wasn`t supposed to but there was some bug in...

    It wasn`t supposed to but there was some bug in the patch. I am doing a reworked version that will fix some stuff and adds off idle cyl trim corrections.
    Definitely a guide of how to will be needed....
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    It is 8bit processor calculating 16bits value. I...

    It is 8bit processor calculating 16bits value. I too haven`t found way to get a usable decimal scalar out of it.

    It is just easier to calulate it that way, you can throw any number in there but...
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