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Thread: so lost

  1. #1
    Tuner in Training
    Join Date
    Nov 2023
    Posts
    14

    so lost

    something is going on with my fuel condition. super high negative LTFTs
    craszy injector pulse widths
    my duty cycle is acting really weird

    at a loss, im trying to fix th fuel issue, weither it be to do with air or other causes. but im only one person. the person that has mechanical abilities telling me it runs fine. which okay maybe it goes down the road, but its only because the pcm is pulling loads of fuel to fix the ratio. im going to upload the log from earlier. anybody thats got any ideas. plz be my guest.
    Attached Files Attached Files

  2. #2
    Tuner in Training
    Join Date
    Aug 2021
    Location
    Akron, OH
    Posts
    34
    What vehicle, powertrain? Mods? Fuel? Purpose?

    Just a quick look, your warm idle is showing 45kPa. Most stock cam cars warm idle is 30-35kPa. You need to move all your fuel and timing tables up to accommodate the drop in vacuum. Essentially move 35kPa ish and down up to the 45kpa area and blend up and down. That should be a decent starting point. Might want to nock 2-3 degrees of timing out every where until you get the fuel good. Your map Sensor is telling your PCM the engine is under a larger load then what it is. So you're running higher up on the base map and enrichment maps. Then your O2s are doing there best to pull fuel back out.

    That's my best guess without any information. I'm assuming you put a larger cam in this vehicle?

  3. #3
    Senior Tuner edcmat-l1's Avatar
    Join Date
    Aug 2006
    Location
    5BA8
    Posts
    3,253
    Post up your current tune file that correlates to that data log.

    It would also be helpful if you stuck to one thread instead of posting a separate thread every time you have a question.

    That's a terrible pid list or channel config. Half the stuff looks bogus.

    DODGE2015.Channels.xml

    Use this config file. Search how to save and open it. You need to save it to this exact path -> Documents/HPtuners/VCM scanner/Channel configs

    Then you'll need to open it in your scanner. Once you have it loaded you'll be ready for data logging. Use your scanner controls to reset the adaptives. Then go out for another drive. It needs to be about twice as long as your data log posted here. This was about 7.5 minutes. Needs to be around 15 min.
    Last edited by edcmat-l1; 12-07-2023 at 07:44 AM.

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