Results 1 to 3 of 3

Thread: closed loop delay

  1. #1
    Tuner in Training
    Join Date
    Feb 2020
    Posts
    38

    closed loop delay

    hi guys
    i have bad experience with new oem BOSCH o2 sensors they always take about 2 minute to warms up and makes fuel trims stuck full lean with longtubes headers
    i never had any problems with old oem NTK o2 sensor
    so, my idea to make closed loop delays about 1.30-2 minutes
    in my car tune i have 2 options only :
    -o2 delay temperature
    -delay in secs
    i have tried delay from 120 sec to 5000 ses no effect at all
    it takes around 15 second form startup to enter closed loop
    also tried 350c to 450c O2 temp no effect at all
    600c worked fine but to much because at the idle o2 temps around 450C
    tune attached
    sorry for my English
    thank you for any suggestions
    Attached Files Attached Files

  2. #2
    Advanced Tuner
    Join Date
    Feb 2016
    Posts
    482
    Turn key forward and warm 02. For several minutes then start car

  3. #3
    Tuner in Training
    Join Date
    Feb 2020
    Posts
    38
    Quote Originally Posted by paulsmithsr View Post
    Turn key forward and warm 02. For several minutes then start car
    thanks
    any suggestions by tuning