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Thread: Injector offset

  1. #1

    Injector offset

    Would wrong injector offset data cause it to run richer when air temp is cooler?
    I had the fuel pretty good last summer and now it's running about 10% rich with about 40*F cooler. Just wondering. I'm going to adjust the table for the drive home tonight.

  2. #2
    Quote Originally Posted by dmaxs10 View Post
    Would wrong injector offset data cause it to run richer when air temp is cooler?
    I had the fuel pretty good last summer and now it's running about 10% rich with about 40*F cooler. Just wondering. I'm going to adjust the table for the drive home tonight.
    The offset is compensation for the injector mechanical delay.

    Just to illustrate this: The light grey line is the desired flow, the colored lines are actual flow, so the injector offset compensates for the missing flow area.

    E67 - 2006 LE5 2.4 Turbo, 444 whp
    E78 - 2013 LUV 1.4T

  3. #3
    Bummer. So what would affect it that much. Cant post tune or file right now or I would. Running speed density is that just how it is?