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Thread: VE tuning, Lean Issue

  1. #1
    Potential Tuner
    Join Date
    Feb 2017
    Location
    northern pa
    Posts
    2

    VE tuning, Lean Issue

    When i copy and paste special,multiply by 1/2%, from the stft ,or err hist, it will lean it out, and make the actual AFR farther away from the target. If it is running leaner than the target, and i add say 2% to the ve table, it will make it run leaner. Sometimes if i adjust the idle zone of the map, and not touch the rest, it will have an incredibly lean cruise zone, like 16%leaner than target when i had stft disabled and using WB err. I feel like im missing some crucial setting or something, because ive read tuning writeups and video instructionals and i follow them step by step but the computer never responds to my inputs in the correct way. Any help will be greatly appreciated. stock 6.0 LQ4 with mild cam. I Attached the stock tune file, and log, then my adjusted files and logs, to show how my adjustments seem to just make it worse.

  2. #2
    Advanced Tuner
    Join Date
    May 2016
    Location
    Adelaide, Australia
    Posts
    246
    How are you adding 1 or 2%?

  3. #3
    Potential Tuner
    Join Date
    Feb 2017
    Location
    northern pa
    Posts
    2
    by multipying highlighted cell by 1.01 or 1.02, or if the stft are adding 2%, i would copy and paste special multiply by % or by %half. either way, when if stft are positive(adding fuel), i will raise the value in the VE table, but the next log will show higher stft(adding more fuel) as if i am going the wrong way, and actually afr will be even leaner than commanded.

  4. #4
    Banned
    Join Date
    Oct 2016
    Posts
    379
    - Ignore your VE for now
    - Remove/disable all things LTFT
    - Adjust/tune your MAF (make a STFT + MAF graph in Graph and get your high numbers to 0 or -1/-2)
    - Thank me later

    Oh and your Spark Tables are phucked up (Low Table higher than your High and too much timing) which is why you're getting a fair bit of knock.

  5. #5
    Tuner in Training
    Join Date
    Mar 2014
    Posts
    19
    what if your not running a maf im having the same issues