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Thread: VE error histogram reads low kpa??

  1. #1
    Tuner in Training
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    VE error histogram reads low kpa??

    The VE histogram reads in the 10kpa range
    But the map in my charts shows 55kpa at idle. I tried playing around with it and at one point the histogram was saying I'm way lean while in fact I was still 12.4AFR

    Has anyone had this issue

    15mile cruise.hpl
    SD street tune.cfg
    5.3L s475 -8?evised5.5.hpt
    Last edited by 1bad03snake; 05-04-2015 at 08:50 PM.

  2. #2
    Advanced Tuner Ranger6202's Avatar
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    what frame are you seeing the difference at? Also, if this is a 3bar OS, you need to scan the 3bar Map values, and not the standard oem map values. Nor can you scan both the standard and OEM at the same time, it screws things up.
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  3. #3
    Senior Tuner mowton's Avatar
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    Agree, seems you need to add the 2 Bar Map pid to your chart and then the Boost VE Histograms insert the Main VE table PID from the list, then all will be supported.

    Ed M
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  4. #4
    Tuner in Training
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    Thank you for the help Ranger.
    That was it. I just changed it and deleted the factory MAP and not its working great!

  5. #5
    HP Tuners Support
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    Quote Originally Posted by 1bad03snake View Post
    Thank you for the help Ranger.
    That was it. I just changed it and deleted the factory MAP and not its working great!
    glad to hear you got it sorted, for future reference this is actually stated in the help file in the custom operating systems section.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"