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Thread: Advance from rpm max

  1. #21
    Supporting Member Turbo Mopar Contributor
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    Re: Advance from rpm max

    something is not correct in the t-lm ram location definitions for ret1 and ret2. another user sent me their log which behaved exactly the same. i need to spend some quality time looking at that .asm.
    89 Voyager LE, 2.5T2 - rest in peace
    87 Charger Shelby T2 (2.4 conversion in process)

  2. #22
    Supporting Member Turbo Mopar Contributor
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    Re: Advance from rpm max

    i only had a few minutes to look at this but the top 2 bits in ret1, ret2, ret3, and ret4 are not used for the knock value. the code cleans them out when reporting knock. so, at a minimum i need to figure out how to remove those bits when using mpscan.... and it appears that the top 2 bits in ret1 and ret2 are being used repeatedly. that's why you are seeing that value jump around as those 2 bits are changed. when i "converted" your log file without those bits there was usually no knock.
    89 Voyager LE, 2.5T2 - rest in peace
    87 Charger Shelby T2 (2.4 conversion in process)

  3. #23
    Supporting Member II Turbo Mopar Contributor jeff1234's Avatar
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    Re: Advance from rpm max

    Your help is appreciated.
    The only substitute for cubic inches is cubic dollars, how fast can you afford to go?

  4. #24
    Slugmobile & MeanMini Caretaker Turbo Mopar Contributor wheming's Avatar
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    Re: Advance from rpm max

    I sent you an email Jeff.

    Thanks Morris for jumping in to help also, even though you didn't have much time.

    I don't know why your Adv is reading so high, but it would be helpful to see your MAP logged as pressure. Your timing should be much lower than that in boost, but in vacuum it could be quite high.

    Are you doing any tuning with MPTune right now, or are you just logging?
    Wayne H.

    '91 Dodge Spirit ES 2.5L turbo 5spd
    '05 PT GT 2.4T HO autostick (RIP)
    '89 Plymouth Acclaim 2.5L turbo auto, "Slugmobile" yes, THE Slugmobile!
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  5. #25
    Supporting Member II Turbo Mopar Contributor jeff1234's Avatar
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    Re: Advance from rpm max

    Just logging at this point. Knowing that some information is funky needed to be fixed first or i'm just chasing my tail. Hopefully wowser will be able to figure this ret1 ret2 problem out so that mpscan can be updated. I will then switch over to map logged as pressure on the gauge layout.
    The only substitute for cubic inches is cubic dollars, how fast can you afford to go?

  6. #26
    Slugmobile & MeanMini Caretaker Turbo Mopar Contributor wheming's Avatar
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    Re: Advance from rpm max

    If you ever try to use the tool in mptune for the pumping efficiency table, you'll need a log with rpm, map (as pressure), and wideband O2.
    TurboatorLM doesn't have the WB2NB (wideband to narrowband ) conversion (iirc).

    But, there is good news. MPSciLnk is a new device as part of the MPSuite line that will allow for analog input logging as well as ecu data. So you should be able to log a wideband output 0-5v to the device and have it in the same log. In fact you could use the wideband 0-1v output signal directly to the O2 signal wire if you choose to.
    MPSciLnk version2 testing is underway with many updates to the board. Testing looks very good from the feedback I've heard. So we should be hearing more updates soon.
    Wayne H.

    '91 Dodge Spirit ES 2.5L turbo 5spd
    '05 PT GT 2.4T HO autostick (RIP)
    '89 Plymouth Acclaim 2.5L turbo auto, "Slugmobile" yes, THE Slugmobile!
    '89 Dodge Caravan SE 2.5L turbo auto, "Mean Mini" yes, Gus' Mean Mini! (Current best 11.699 @ 114.43 mph! - Oct 15th, 2022 Cecil County Dragway, MD)
    MeanMini dragracing videos: https://www.youtube.com/playlist?lis...URZLB1RxGYF6vw
    and other cars, trucks and motorcycles
    https://www.youtube.com/user/SlugmobileMeanMini

  7. #27
    Supporting Member Turbo Mopar Contributor
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    Re: Advance from rpm max

    Quote Originally Posted by jeff1234 View Post
    Just logging at this point. Knowing that some information is funky needed to be fixed first or i'm just chasing my tail. Hopefully wowser will be able to figure this ret1 ret2 problem out so that mpscan can be updated. I will then switch over to map logged as pressure on the gauge layout.
    jeff, i just posted a new version of mpscan to try to deal with this. without an LM ecu i am unable to test it but i'll rely on you for now :-).

    here's what you need to do:
    -start mpscan, wait a few seconds, exit and let it update to version 2.0.4.3
    -restart and open your layout with the 4 knock gauges
    -for gauges ret1 and ret2 do the following;
    a) right click on gauge and select edit gauge settings
    b) scroll down to section "gauge display"
    c) change "display bit op command" to "and"
    d) change "display bit op value" to 63
    e) repeat for other gauge
    f) save layout
    -try another log and see what happens. if it looks like it is working post up the log.
    -you may need to delete the existing ret1 and ret2 gauges and readd them if it doesn't work initially.

    lmk.

    morris.
    89 Voyager LE, 2.5T2 - rest in peace
    87 Charger Shelby T2 (2.4 conversion in process)

  8. #28
    Supporting Member II Turbo Mopar Contributor jeff1234's Avatar
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    Re: Advance from rpm max

    Those instructions have been completed.

    - - - Updated - - -

    I hope to test this tommorow, depending on weather.
    The only substitute for cubic inches is cubic dollars, how fast can you afford to go?

  9. #29
    Supporting Member II Turbo Mopar Contributor jeff1234's Avatar
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    Re: Advance from rpm max

    Update, success!!! I am at work right now but will post the test run today in late afternoon.
    The only substitute for cubic inches is cubic dollars, how fast can you afford to go?

  10. #30
    Supporting Member II Turbo Mopar Contributor jeff1234's Avatar
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    Re: Advance from rpm max

    On my last scan I noticed that map was showing 8 psi, I am actually boosting to 13 psi. Has anyone had this experience and was there a fix?
    The only substitute for cubic inches is cubic dollars, how fast can you afford to go?

  11. #31
    Supporting Member Turbo Mopar Contributor
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    Re: Advance from rpm max

    are you using a 2 or 3 bar map sensor?
    89 Voyager LE, 2.5T2 - rest in peace
    87 Charger Shelby T2 (2.4 conversion in process)

  12. #32
    Supporting Member II Turbo Mopar Contributor jeff1234's Avatar
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    Re: Advance from rpm max

    Wowzer, 2 bar.
    The only substitute for cubic inches is cubic dollars, how fast can you afford to go?

  13. #33
    Supporting Member II Turbo Mopar Contributor jeff1234's Avatar
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    Re: Advance from rpm max

    Wowzer, was my info that I have a two bar map lead you to any conclusions about why my boost gauge doesn't agree with the MPScan gauge?
    The only substitute for cubic inches is cubic dollars, how fast can you afford to go?

  14. #34
    Supporting Member Turbo Mopar Contributor
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    Re: Advance from rpm max

    jeff1234, haven't had time yet to take a good look. sorry.
    89 Voyager LE, 2.5T2 - rest in peace
    87 Charger Shelby T2 (2.4 conversion in process)

  15. #35
    Supporting Member II Turbo Mopar Contributor jeff1234's Avatar
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    Re: Advance from rpm max

    Wowser, thank you for the help you give us. I'm looking forward to the point when you are able to view it and possibly find a solution.
    The only substitute for cubic inches is cubic dollars, how fast can you afford to go?

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