Results 1 to 16 of 16

Thread: Torque reporting

  1. #1
    Senior Tuner DSteck's Avatar
    Join Date
    Mar 2008
    Location
    St. Louis, MO
    Posts
    4,113

    Torque reporting

    Can we get access to change the torque reporting? For example, if I want I artificially inflate or deflate reported torque, can we get the necessary table(s) to do this? I am mostly interested in doing this to bring torque numbers back up after scaling for larger injectors.

    DSX Tuning - St. Louis, MO
    Injector Dynamics dealer/supporter/lemming
    http://www.facebook.com/dsx.tuning
    Just say no to bull s***.
    IF YOU WANT HELP, POST A FILE!

  2. #2
    Advanced Tuner
    Join Date
    Jun 2008
    Location
    Charleston, SC
    Posts
    969
    custom pid in the scanner??

  3. #3
    Potential Tuner
    Join Date
    Mar 2012
    Posts
    2

    Just bought VCM Suite Hp tuners! Can't figure it out!

    unable to open file
    string was not recognized as a valid datetime
    came up when I tried to read entire vcm...
    If you know what the problem is please let me know!! Thanks

  4. #4
    Senior Tuner DSteck's Avatar
    Join Date
    Mar 2008
    Location
    St. Louis, MO
    Posts
    4,113
    Quote Originally Posted by carlrx7 View Post
    custom pid in the scanner??
    IDGAF what the scanner says. I want to adjust what is actually sent to the TCM.

    DSX Tuning - St. Louis, MO
    Injector Dynamics dealer/supporter/lemming
    http://www.facebook.com/dsx.tuning
    Just say no to bull s***.
    IF YOU WANT HELP, POST A FILE!

  5. #5
    Senior Tuner Frost's Avatar
    Join Date
    Jan 2006
    Location
    Richmond VA
    Posts
    1,675
    On some platforms it seems that fudging displacement can affect tq calc, but often not on the platforms when it's most needed.

    In extreme cases, all you can do is run a trans pressure gauge and literally re-curve the FMC table (which really just regulates actual PCS bleed) to get the pressure back in line because tq/pressure scaling will not always make up the difference.
    Steve Williams

  6. #6
    Senior Tuner DSteck's Avatar
    Join Date
    Mar 2008
    Location
    St. Louis, MO
    Posts
    4,113
    I'm specifically wanting this option for A6 cars.

    DSX Tuning - St. Louis, MO
    Injector Dynamics dealer/supporter/lemming
    http://www.facebook.com/dsx.tuning
    Just say no to bull s***.
    IF YOU WANT HELP, POST A FILE!

  7. #7
    Senior Tuner Frost's Avatar
    Join Date
    Jan 2006
    Location
    Richmond VA
    Posts
    1,675
    It's definitely needed.
    Steve Williams

  8. #8
    Senior Tuner DSteck's Avatar
    Join Date
    Mar 2008
    Location
    St. Louis, MO
    Posts
    4,113
    Is this either a "sure, we'll add it" or "go pound sand" situation? I need closure!

    DSX Tuning - St. Louis, MO
    Injector Dynamics dealer/supporter/lemming
    http://www.facebook.com/dsx.tuning
    Just say no to bull s***.
    IF YOU WANT HELP, POST A FILE!

  9. #9
    HP Tuners Support
    (foff667)
    Bill@HPTuners's Avatar
    Join Date
    Jun 2004
    Location
    Hailing from Parts Unknown
    Posts
    22,826
    Yeah I talk to chris a little bit about this a couple weeks ago. He Probly could add the table or tables needed but the problem is around the fact the ve coefficient tables would need to be perfect for it to work right. I have a feeling bad things could happen if it isnt. Right now with his current work load of e 78 pcm e 39 pcm and dodge pcm it maybe a while though before he can look into it further.
    Needle, meet haystack

  10. #10
    HP Tuners Owner Chris@HPTuners's Avatar
    Join Date
    Mar 2003
    Location
    Melbourne, Australia
    Posts
    5,249
    try changing the Max Torque Timing table (MBT), the amount of torque the ECM calculates depends mostly on airflow and spark. The airflow part calculates the maximum torque the engine can make at the current airflow (so increasing airflwo increases torque). The spark part determines how far away from MBT the current spark is and reduces the calculated torque.

    ie. the higher the airflow is and the closer the current spark is to MBT table the higher the calculated engine torque will be. If you reduce the MBT table it will increase calc'd torque.
    I count sheep in hex...

  11. #11
    Senior Tuner DSteck's Avatar
    Join Date
    Mar 2008
    Location
    St. Louis, MO
    Posts
    4,113
    From what I understand, the other guys somehow have a multiplier available.

    I essentially want to be able to double the calculated torque in all instances.

    DSX Tuning - St. Louis, MO
    Injector Dynamics dealer/supporter/lemming
    http://www.facebook.com/dsx.tuning
    Just say no to bull s***.
    IF YOU WANT HELP, POST A FILE!

  12. #12
    HP Tuners Owner Chris@HPTuners's Avatar
    Join Date
    Mar 2003
    Location
    Melbourne, Australia
    Posts
    5,249
    Quote Originally Posted by DSteck View Post
    I essentially want to be able to double the calculated torque in all instances.
    Can i ask why? Is this an injector or airflow scaling case?

    And BTW, are we talking about E38's etc. or LS1?
    I count sheep in hex...

  13. #13
    Senior Tuner DSteck's Avatar
    Join Date
    Mar 2008
    Location
    St. Louis, MO
    Posts
    4,113
    Quote Originally Posted by Chris@HPTuners View Post
    Can i ask why? Is this an injector or airflow scaling case?

    And BTW, are we talking about E38's etc. or LS1?
    Airflow scaling for larger injectors. NAmely E38 with A6 scenarios, although E40 applications would be nice as well.

    DSX Tuning - St. Louis, MO
    Injector Dynamics dealer/supporter/lemming
    http://www.facebook.com/dsx.tuning
    Just say no to bull s***.
    IF YOU WANT HELP, POST A FILE!

  14. #14
    Senior Tuner DSteck's Avatar
    Join Date
    Mar 2008
    Location
    St. Louis, MO
    Posts
    4,113
    Can you offer some insight into the way the math works? If we can make it work with the MBT table, that's fine... Just need to know how to properly do it without trial and error.

    DSX Tuning - St. Louis, MO
    Injector Dynamics dealer/supporter/lemming
    http://www.facebook.com/dsx.tuning
    Just say no to bull s***.
    IF YOU WANT HELP, POST A FILE!

  15. #15
    HP Tuners Owner Chris@HPTuners's Avatar
    Join Date
    Mar 2003
    Location
    Melbourne, Australia
    Posts
    5,249
    the PCM calculates the torque based mostly on airflow with some smaller corrections for EQ ratio and friction. Lets say it calculated a final torque 500 Nm.

    Then it looks at the MBT table spark and the current spark and determines an efficiency (a multiplier). If the spark is equal to the MBT spark, then the efficiency will be 100% ie. Calc'd torque would be 500Nm. If the spark is less than MBT the effciency is less than 100% and you would get a torque less than 500Nm. Calculating this efficiency is the only purpose of the MBT spark table.

    How much can you gain by lowering the MBT table? You would need to experiment but it should be possible to get reasonable increases, especially on boosted cars where the WOT spark is usually a lot lower than the MBT spark.

    Chris...
    I count sheep in hex...

  16. #16
    Senior Tuner DSteck's Avatar
    Join Date
    Mar 2008
    Location
    St. Louis, MO
    Posts
    4,113
    Damn you Chris. Make me a field that just lets me punch in a multiplier for torque! Haha.

    DSX Tuning - St. Louis, MO
    Injector Dynamics dealer/supporter/lemming
    http://www.facebook.com/dsx.tuning
    Just say no to bull s***.
    IF YOU WANT HELP, POST A FILE!