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Type: Posts; User: ecotec88fiero

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  1. Looking over speartechs website, if they are...

    Looking over speartechs website, if they are mimicking the BCM CAN signals to the ECM and TCM, why would you need to change anything in the tune?

    Also, if you bought their product, why wouldn't...
  2. In stock form, the BCM monitors the shifter...

    In stock form, the BCM monitors the shifter control and then tells the ECM and the TCM what it is doing over the CAN bus.

    How is yours wired up?
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    The porcelain part of the spark plug in the...

    The porcelain part of the spark plug in the cylinder is cracked? If that is the case then I think the 5 degrees of KR you are seeing is not false knock.
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    Spend the $400 for a programming power supply...

    Spend the $400 for a programming power supply from Midtronics. Stable 13.5V with current supply up to 70A, keeps even a dead battery nice and stable when doing long programming events.

    Also, roll...
  5. I wasn't sure if this applied to GM's DI motors...

    I wasn't sure if this applied to GM's DI motors because they have spent a lot of time and money on mixture propagation and combustion quality but it was interesting to read about. Maybe other...
  6. I was recently reading a general DI tuning...

    I was recently reading a general DI tuning article and it mentioned that SOI being started too soon can cause problems. If you think about it, if you start it too soon you have a very hot piston...
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    This is how I thought it worked for the most...

    This is how I thought it worked for the most part.

    Boundary is the absolute latest angle the ECM can FINISH spraying fuel.
    The RPM and the ECT adders basically subtract from boundary angle...
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    Do you have a log of when it isn't going into...

    Do you have a log of when it isn't going into DFCO?
    Coolant temp, cylinder airmass, throttle position, and vehicle speed should be logged as well as fuel system status and fuel trim cell I think.
    ...
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    Never mind, they are enabled I just looked at the...

    Never mind, they are enabled I just looked at the wrong calibration.
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    Which way does the throttle open? Could you have...

    Which way does the throttle open? Could you have a throttle plate being forced in the wrong direction by the high airflow?

    Or after you let off and the boost spike before the BOV opens is moving...
  11. The problem that you run into is if you modify...

    The problem that you run into is if you modify your offset to make them agree during one condition, the other condition will be off.

    You usually add your offset to the the offset value in your...
  12. Alright I just couldn't tell from the picture how...

    Alright I just couldn't tell from the picture how well it was prepared. Factory termination point have two or three threads of electroplated metal that is formed into the sheet metal so usually its a...
  13. From that picture and what you are describing,...

    From that picture and what you are describing, you need to find a better ground. Painted sheet metal is never a good ground.

    Terminate it at the battery termination point on the body. Usually the...
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    Not to get off topic but it cracks me up the...

    Not to get off topic but it cracks me up the difference between tuning a turbo cobalt, whose owner is balks at $900 IDs, and a CTS V owner who willing spends the $900 for IDs.
  15. Where is it grounded?

    Where is it grounded?
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    There are some rip offs running around I believe....

    There are some rip offs running around I believe.

    The data the Greg Banish put out in his first CD cured so many of my problems I had on a Hahn turbo kit LSJ Cobalt I was tuning. I learned a good...
  17. I would really want to see actual timing like...

    I would really want to see actual timing like 10_SS said. Where is the wide band located? I would want to see what each bank was doing at the time of the power loss too.
  18. This is a great idea. Should show you if the VE...

    This is a great idea. Should show you if the VE airflow calculation is the cause of your cylinder air mass spike for the first car.
  19. How were both of these tunes scaled? Does the...

    How were both of these tunes scaled?

    Does the car log any misfires when it spikes? The O2s don't show a misfire but just something to check.

    Sometimes a putting a car back on the street makes...
  20. Remember that the VE table that is generated from...

    Remember that the VE table that is generated from either HP or Bluecat isn't actually what the ECM is using. It is using the coefficients generated in its calculation, so smooth on a 3D surface may...
  21. The injector pulse width is just following...

    The injector pulse width is just following whatever g/cyl is being measured. Look at the spike in your g/cyl, where and why is it jumping up and then back down. Find where that spike is in your...
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    Will it be up to users to configure the serial...

    Will it be up to users to configure the serial data into HP?
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    Serial port? Will this be plug and play into an...

    Serial port? Will this be plug and play into an existing interface?

    This would be awesome because I just purchased an AFM1500 and while the voltage offset isn't an issue on this wide band, direct...
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    Just as a final check, try driving a relay with...

    Just as a final check, try driving a relay with the high speed cooling fan pin.

    If that is a no go then I am not sure at this point. What else uses an E78?
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    Ya, how are you checking the output because the...

    Ya, how are you checking the output because the both are ground side controls from the PCM, one if just a switch to ground and the other is PWM ground side control.

    Tek1229 is right as far as no...
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