Results 1 to 2 of 2

Thread: reset long term fuel trims

  1. #1

    reset long term fuel trims

    specifically i'm working on a 18 tundra. i used the table to prevent it from going into closed loop, but i'm stuck with the 3 zones of long terms. is there a way to reset these? battery doesn't do it, total ecu unplug doesn't, flash doesn't. they see to be permanent memory. no special function in hpt either. help greatly appreciated.

  2. #2
    Advanced Tuner 4wheelinls1's Avatar
    Join Date
    Jun 2009
    Location
    Melbourne Australia
    Posts
    283
    have had the same issue with Supercharged with injector change, I just kept tuning, it takes time to re-learn but you can eventually get the LTFT trims back close to 0. I put in a support ticket to HP and they were not able to add a reset.