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Thread: LTFT not equal?

  1. #1
    Tuner in Training
    Join Date
    Jan 2015
    Location
    Delaware
    Posts
    16

    LTFT not equal?

    my truck LTFT bank 1 is different than my bank 2. bank 1 is 7.4 and bank 2 is 12.8 at idle. but when I give it throttle or cruise 60 mph, bank 2 becomes what bank 1 is. my STFT are exactly the same all the time.

  2. #2
    Tuner in Training
    Join Date
    Jan 2015
    Location
    Delaware
    Posts
    16
    I just put cam in it also....... heres my scan
    Attached Files Attached Files
    Last edited by jadkins1141; 02-04-2015 at 10:27 PM.

  3. #3
    Advanced Tuner
    Join Date
    Jun 2012
    Posts
    225
    You might have a small vacuum leak or exhaust leak on one side. Probably doesn't show up at part throttle.

  4. #4
    Advanced Tuner
    Join Date
    Sep 2010
    Location
    webb city, mo
    Posts
    504
    check for exhaust leaks on the passenger side near the header collector, or wherever the closest joint is in your exhaust system to you O2 sensor.