Results 1 to 3 of 3

Thread: AFR error not registering on graph

  1. #1
    Tuner in Training
    Join Date
    Apr 2019
    Posts
    13

    AFR error not registering on graph

    I have set up my wide band through the egr and it is working as it should, showing on the chart vs time. I have tried to set up a graph for egr error and the it is bouncing around the cells as though it is set up right but it does not record any data. I will attach pics of all the settings and math I have done. I have watched numerous videos on this and believe I am doing it right. Can some one see where I have made a mistake?afr err.PNG
    Attached Images Attached Images

  2. #2
    Tuner in Training
    Join Date
    Feb 2019
    Posts
    29
    Quote Originally Posted by hbunker View Post
    I have set up my wide band through the egr and it is working as it should, showing on the chart vs time. I have tried to set up a graph for egr error and the it is bouncing around the cells as though it is set up right but it does not record any data. I will attach pics of all the settings and math I have done. I have watched numerous videos on this and believe I am doing it right. Can some one see where I have made a mistake?afr err.PNG
    same here

  3. #3
    Advanced Tuner
    Join Date
    Dec 2011
    Location
    Amarillo, TX
    Posts
    250
    Using O2 sensor voltage isn't correct, not even sure why that's in there at all.

    AFR Error should be as follows: 100 * ([AFR actual] - [commanded AFR]) / [commanded AFR]

    So you should be using the AFR through EQR in place of AFR actual, then need to be logging the commanded AFR channel in the scanner.
    JTC Performance - Authorized HP Tuners Reseller
    Performance Tuning in the Texas Panhandle