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Thread: Turbo NB O2 WB O2 cylinder select.

  1. #1
    Tuner in Training
    Join Date
    Apr 2017
    Location
    SE AZ
    Posts
    11

    Turbo NB O2 WB O2 cylinder select.

    Set-up
    2007 5.3L Flex fuel truck motor and all the hardware including DBW
    Added turbo
    Added injectors #12613412 with non-regulated 58 psi info.
    Started with stock tune from 2006 5.3L with 2 bar SD OS
    Added 2 bar MAP sensor with change in setting
    Disabled MAF
    NB O2 bank 1 sensor 1 is installed in the down pipe from a shorty header, 4 to 1.
    NB O2 bank 2 sensor 1 is installed in a box that the turbo sits on, a header log if you will.
    4 short pipes from bank 2 cylinders and one cross over pipe from the bank 1 side feed this box.
    WB O2 is installed in the turbo down pipe or exhaust.

    Two log files, one with the cylinder select all set to 1 in an effort to get fuel trims to just look at the right bank?

    It appears that my WB conflicts with the NB and the fuel trims.

    Can not get it to idle lower than 1000 rpm.

    My WB says lean but the fuel trim says way rich.

    I am leaning towards leaning out the idle part of the VE table.

    I am sure more needs to be done somewhere.

    failMAF.hpt
    bankselect.hpl

  2. #2
    Tuner in Training
    Join Date
    Dec 2020
    Posts
    25
    p0101 and p0102 need to be mil on first error. VE table looks really high.

  3. #3
    Tuner in Training
    Join Date
    Dec 2020
    Posts
    25
    p0101 and p0102 need to be mil on first error. VE table looks really high. I think I would have left the injector control set to factory settings.