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Thread: LTFTs not working

  1. #1
    Tuner tonyvette's Avatar
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    LTFTs not working

    Can someone look at this tune and tell me why my LTFTs aren't working? It is a mail order tune that I have been tweaking on, but I haven't been able to figure this out...HELP PLEASE!!!

    7-6 changes fuel.hpt
    2012 Colorado 5.3
    Magnum 70mm turbo
    RevMax 2800 stall converter
    DevilsOwn meth

  2. #2
    Senior Tuner mowton's Avatar
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    What is happening to make you think the LTFT's a rent working? show us a log. Make sure the 02 sensors are toggling.
    if you can.

    Ed M
    2004 Vette Coupe, LS2, MN6, Vararam, ARH/CATs, Ti's, 4:10, Trickflow 215, 30# SVO, Vette Doctors Cam, Fast 90/90, DD McLeod, DTE Brace, Hurst shifter, Bilsteins etc. 480/430

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  3. #3
    Tuner tonyvette's Avatar
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    Here's a scan. Any other suggestions on getting this tune better would be appreciated. I keep making minor changes to spark and pe with discouraging results.

    7-6 scan late.hpl
    2012 Colorado 5.3
    Magnum 70mm turbo
    RevMax 2800 stall converter
    DevilsOwn meth

  4. #4
    Senior Tuner SultanHassanMasTuning's Avatar
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    did you have the LTFT disabled before? maybe do a write entire
    Follow @MASTUNING visit www.mastuned.com
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  5. #5
    Tuner tonyvette's Avatar
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    Trims have been disabled since I loaded the mail order tune. Gonna try the write entire.

    Edit: I just read the help section on "write entire". Simply put, it scared the shit out of me lol! Is it possible my mail order tuner put some sort of tunerlock on the LTFTs? I will be driving the truck to him soon for a dyno tune, but it runs so crappy that I just wanted to get it better before going to the dyno (100 miles away). Also, he uses efilive. Does that matter?
    Last edited by tonyvette; 07-08-2014 at 12:27 PM.
    2012 Colorado 5.3
    Magnum 70mm turbo
    RevMax 2800 stall converter
    DevilsOwn meth