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Thread: L92 swap LTFTs 23% prior to MAF tuning.. problem?

  1. #1
    Tuner in Training
    Join Date
    Feb 2017
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    26

    L92 swap LTFTs 23% prior to MAF tuning.. problem?

    Hello all,

    I have a L92 recently swapped into a landcruiser and am about to start the MAF calibration. Thing is, at low RPMs anyway, the LTFTs are around 23%. I understand for all tuning you disable LTFTs to reduce variables, thing is I'm worried about it running well 23% lean to get the driving cycles done for MAF calibration.

    Should I do a quick adjustment of fuel tables based on LTFTs before disabling them for the MAF tuning? Will the STFTs take care of it?

    I've been doing a lot of reading but don't see much about LTFTs this high. I have verified fuel pressure at 58psi.. no more fuel pump control module, I'm using a corvette filter with the built-in regulator.

    Thanks for any help
    Last edited by bloc; 05-09-2017 at 04:51 PM.