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Thread: ecm is commanding 1.09 lambda...but I cannot find where its coming from..

  1. #21
    Tuner
    Join Date
    Mar 2013
    Location
    A-Town PA
    Posts
    54
    So even when the ECT is under 150 and it should be taking the numbers from the Base Fuel Cold table, as long as it's in closed loop it automatically defaults back to the standard Base Fuel table?

  2. #22
    HPT Employee Eric@HPTuners's Avatar
    Join Date
    Oct 2007
    Location
    Crawfordville, FL
    Posts
    2,409
    When it is closed loop, the PCM keeps the mixture at stoich. The Base Fuel Table is used once a specific ECT has been met or certain amount of time since startup. Before that it uses the Base Fuel Cold Table.
    Eric Brooks
    HP Tuners, LLC