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Thread: My graph won't populate

  1. #1
    Tuner in Training
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    Jul 2025
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    My graph won't populate

    Hi all
    I'm trying to make a graph with the same row and column as my virtual VE table.I used user math to make up the map/barometric pressure ratio. I dunno for sure where I've made a wrong turn but it looks okay to me but no matter what I've tried I can't get my graph to populate. The graph's that are so with the template I choose seem to update fine. Hopefully someone can help me see where I went wrong?

    First pic is my VE table in trying to replicat.
    Second pic is my VE scanner page.
    Third pic is the math parameters I made and used.
    Fourth pic is the graph settings I used.
    I have a MPVI3
    And I've tried closing the program and restarting it and disconnecting and reconnecting the MPVI3.
    Thanks to anyone who tries ��
    Robert

    IMG-1657.jpg
    IMG-1656.jpg
    IMG-1655.jpg
    IMG-1654.jpg
    Last edited by RobertR728; 1 Week Ago at 08:11 PM.

  2. #2
    Senior Tuner
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    Can't really tell much from the screen shots, they are pretty small. If you think taking pictures with your phone is a good way of sharing screen information, at least rotate the phone so have of your picture isn't of your keyboard.

  3. #3
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    I will post better pics. Is there any other info I could post or add that would help?
    I thought you could open there thumbnails to full pictures?

  4. #4
    Senior Tuner
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    Full pictures weren't really readable on my screen.

    You are seeing data for the parameters you are graphing? They are in your channels list?

  5. #5
    Tuner in Training
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    Yes i have them in the channels section and they populate there. Baro pressure is off the screen at the bottom on picture 4 but its populated also.
    Attached Images Attached Images
    • File Type: jpg 1.jpg (1.11 MB, 5 views)
    • File Type: jpg 2.jpg (991.9 KB, 6 views)
    • File Type: jpg 3.jpg (383.8 KB, 5 views)
    • File Type: jpg 4.jpg (360.8 KB, 3 views)

  6. #6
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    What happens if you change units on picture 2. I remember some of that type stuff being picky. If not play with the decimal places on page 2 & 3. It's probably going to be something like that.

  7. #7
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    Let me go try and to mess with those settings. ill make a new log file and post it too. This is a short video of what i saw in the last log.

    https://robertr728.vids.io/videos/a4...der_07-18-2025

    I messed with them all very quickly and didn't see any change. Une thing i noticed that i dunno if its part of the issue is that the blue cursor on the chart on the right for my EQ error that I'm trying to get working don't move around when recording the chart is all white grid. But in playback mode the blue cursor is there and moving around seemingly properly but no numbers are being written.
    Last edited by RobertR728; 1 Week Ago at 06:15 PM.

  8. #8
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    It sounds like numbers are being placed in the cells but aren’t visible because of a decimal place issue or filter. It’s some basic/simple but I can’t tell you exactly what.

  9. #9
    Tuner in Training
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    Hi again
    well I was doing some playing with the graph I made and I see something odd to me.
    On the picture below the WB O2 Ratio 1 and % are greyed out. When i hit start scanning those two channels disappear.
    So I'm saying my chart wont work without those channels.
    My problem is I don't see those channels on the available channel's list.
    If I replace the channel with a WB ratio from one of the aftermarket WB gauges the chart begins to populate but with incorrect numbers because I don't have the WB sensor that i used.
    So is there a way that I can get it to use the factory O2 sensors to give me WB ratio?
    Attached Images Attached Images
    • File Type: jpg 5.jpg (349.2 KB, 2 views)

  10. #10
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    You probably need to move this discussion to the particular section that covers your vehicle. They can all be a little different.

  11. #11
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    From what I think I see is that the gen 5 gm vehicles don't use wide band sensors so my EQ ratio prolly isn't gonna work with these settings because I don't have wide band just stock low bands sensors.
    At least that's what I'm thinking is going on.