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Thread: Row axis parameter for LTFT VVE tuning

  1. #1
    Potential Tuner
    Join Date
    Apr 2017
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    5

    Row axis parameter for LTFT VVE tuning

    Can't seem to find a clear answer, when setting up a histogram to tune VVE table using LTFT on the 5th gen do I use MAP/Baro or MAP pressure in Kpa? I know on the older VVE tables the row axis is in MAP Kpa pressure but mine is displaying MAP/Baro.

    Thanks

  2. #2
    Tuner in Training
    Join Date
    Jul 2008
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    13
    Don't know if this helps or not, but boosted gen 5 uses pressure ratio which can be found in math parameters. Not sure if n/a still uses pressure ratio or not.

  3. #3
    Potential Tuner
    Join Date
    Apr 2017
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    5
    That's how I currently have my histogram set up but haven't had time to try it out. I am still N/A unfortunately.

  4. #4
    Senior Tuner
    Join Date
    May 2003
    Location
    South FL
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    1,385
    It is pressure ratio typically. You can find out by looking at your files VVE table and seeing if the row identifier says Pressure(KPA) or Pressure Ratio (MAP/BARO). If it is pressure ratio, you will need to make sure you are logging MAP Hi Res and Baro Hi Res, meaning the non SAE PID's.
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