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  1. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    198
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    16,833

    Not much. They seem related to the injectors BPW...

    Not much. They seem related to the injectors BPW tpu values for the 8th cylinders. They are only cleared by eside. which means they can be some timers related to bpw. On 94-95 code there is some...
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    Look at this chart.chart...

    Look at this chart.chart this is how the signal looks like at the pcm. When you draw a line at the middle of the small hole on the reluctor wheel and you are at #1 tdc.

    Pcm gets one signal of the...
  3. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    198
    Views
    16,833

    Nice progress. Can you look at the end of...

    Nice progress. Can you look at the end of injection target and how it is used by the tpu. The math here is some what guessed it will be nice to get a confirmation how to convert the eoit target to...
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    680

    It should be something like that. I am not that...

    It should be something like that. I am not that familiar how the messages are constructed.
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    680

    The afr pid is 119e and is 1 byte long....

    The afr pid is 119e and is 1 byte long. Conversions is x*10. Let me know if you need some other info for logging. You are the perfect guinea pig for the adx improvement.
    It is good to know that not...
  6. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    198
    Views
    16,833

    It is done at reset and than at oc4i. The update...

    It is done at reset and than at oc4i.
    The update of offset value is every 100ms and it is stored at the TPU every 112.5 ms. I am sure it will be the same or close at the 96-97 code.
    It will be nice...
  7. Replies
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    12,215

    I test it with the built in test definition for...

    I test it with the built in test definition for eside, but have plans to add more. The definition is small one like 17 bytes or so. You provided it with the first version of the definition file. I...
  8. Replies
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    99,644

    That`s exactly what I did to get a higher...

    That`s exactly what I did to get a higher resolution from 8bits tables and the idea was borrowed from the prime pulse math. The scalar defines the resolution of the 8bit table. So with this setup a...
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    488

    I got some free time and ripped some of the abs...

    I got some free time and ripped some of the abs communication of 94 f-body. Here are the commands.
  10. Replies
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    12,215

    Hi steveo, I am trying to log eside while...

    Hi steveo,

    I am trying to log eside while engine is running. I managed to make eside talk with some extra work.
    I have some issues with playback of logs.
    When I open eehack and haven`t...
  11. Replies
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    123

    In that case you need to fix the seed/key pair on...

    In that case you need to fix the seed/key pair on the bin you have pulled, and than write it in clone mode with the pin grounded. After that you can tune as usual.
    If you can`t fix the seed/key pair...
  12. Replies
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    99,644

    Exactly, the bpw is set to zero. Only when the...

    Exactly, the bpw is set to zero. Only when the code is set the fuel is allowed. Next on the list is to confirm by hand feel, batch mode vs sequential. On eside all the calculations are sequential but...
  13. Replies
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    99,644

    I hate to spam on the thread with irrelevant...

    I hate to spam on the thread with irrelevant information, but I changed the high res error threshold to 2 and it fired right on. I even think it fired faster than usual with good high res signal on a...
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    123

    So you are still having troubles reading the bin....

    So you are still having troubles reading the bin. 934d is likely your key for the pcm. You can try reading it the normal way without grounding the pin and if requested put the key.

    A good detailed...
  15. Replies
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    123

    I guess the pcm is tunerlocked. If you want to...

    I guess the pcm is tunerlocked. If you want to read it you need to ground a pin on the board. Requires bench setup and opening the case of the pcm.
  16. Replies
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    99,644

    Thanks for the pictures. If the ir leds are wired...

    Thanks for the pictures. If the ir leds are wired in series, if one fails both signals will be out. Easy to identify the problem. I don`t see anything here that can`t live forever.
    It seems pretty...
  17. Replies
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    Here is the time conversion of spark. It can also...

    Here is the time conversion of spark. It can also be referenced as end of dwell similar to EOIT usag


    RESERVED:5FD6 loc_5FD6: ; CODE XREF: IRQ+D74j
    RESERVED:5FD6 ...
  18. Replies
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    Thanks for the links. I might need the earlier...

    Thanks for the links. I might need the earlier version of the sensor here.



    So in my case the beam is broken all the time and there is no ground path applied. It looks like the light emitting...
  19. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    198
    Views
    16,833

    Maf is a mass air flow, It measures mass with a...

    Maf is a mass air flow, It measures mass with a heat element being cooled. It is supposed to compensate for temperature and pressure, however humidity kind of screw the reading. However in the code...
  20. Replies
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    99,644

    I did some more investigation and found the high...

    I did some more investigation and found the high res be totally dead. I hook up a led on the high res line while rotating the engine and it is constant 5volts, I hook it to the low res signal and it...
  21. Replies
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    Still stock. I can temporary wire the...

    Still stock.

    I can temporary wire the controller for testing with the d580 coils I have.
  22. Replies
    601
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    99,644

    The opti finally gave up. I got a high res error....

    The opti finally gave up. I got a high res error. Somehow the pcm managed to run the engine once it fires. Have you managed to add some safety features on high res failure, and is it possible to get...
  23. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    198
    Views
    16,833

    That is some great breakthrough. Now can we find...

    That is some great breakthrough. Now can we find out what is the usage of high res signal. Is it only used for spark triggering or it does affect fueling also.
    Cranking is really hard without high...
  24. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    198
    Views
    16,833

    Thanks for the input on the SCSSI. After some...

    Thanks for the input on the SCSSI. After some trials and some bricks I managed to make the eside talk while the engine is cranking.
    First I tried to reenable comms at oc4i. It didn`t worked as...
  25. Thread: Hello

    by kur4o
    Replies
    9
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    179

    It might be a little more complicated. There is...

    It might be a little more complicated. There is also some digital data exchange between ccm and pcm via aldl on y-body calibrations.

    You can give it a try with the signal generator, trying all...
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