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Thread: holden vy v6 info inaccurate

  1. #1
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    Default holden vy v6 info inaccurate

    Hi to all
    When using v4 ver 6.5 when reading info i have found some gauges inaccurate ie maf sensor reading 80 gps when it should be about 5-9 gps. I have checked this with another car and the same

  2. #2
    EFILive Developer Site Admin Blacky's Avatar
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    What makes you think the value is incorrect? i.e. why do you think it should be 5-9gps instead of 80gps?
    I'm not saying you're wrong, I'm just trying to figure where the 5-9gps figures are coming from so I've got somewhere to start looking.

    Regards
    Paul
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  3. #3
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    Quote Originally Posted by vizzy View Post
    Hi to all
    When using v4 ver 6.5 when reading info i have found some gauges inaccurate ie maf sensor reading 80 gps when it should be about 5-9 gps. I have checked this with another car and the same
    There's no scaling in the included def so the numbers your seeing is the raw data (unscaled). From memory the scaling is 0.0625 to give you g/sec. That makes your 80 reading exactly 5 g/sec

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    The 80 gps was at idle, and when at part throttle it maxes out on the dash guage ( of efi live) which is 300gps. I have seen it in aldl data go over 1200 gps.
    I got the 5-9 gps figures out of the holden service training manuals. One thing i have found is that the Hz figures are correct. I got 2397 Hz at the 81 gps figure at idle, and the service manual says 2450 - 2600 Hz. I am wondering if the gauges can be callabrated, fine tuned??

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    I there a way to set up the gauge to auto scale??

  6. #6
    EFILive Developer Site Admin Blacky's Avatar
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    I have not verified the scaling that Kangsta suggested, but it sounds right.
    If you want to set up the gauge to use that scaling, see the images...
    Regards
    Paul
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  7. #7
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    I set up the scaling as you said, works well. Many thanks
    Is thera a list of the scailing required for all engine data?? I want to make sure that my timing data is correct

    Vizzy

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    interesting. with the scaling applied, mine alternates between 1 most of the time and 10 the rest of the time. actually it also alternates when there is no electrical connection to the sensor, which does not seem possible to me.. ill have to verify that.... sounds like the sensor is bad maybe. For my engine it says in the dealers manual should be between 4-7. tried cleaning it already with maf cleaner.

    also i set the scale to 15 not 120 as in the screen shot. makes things alot more visible.
    Last edited by tunethis; October 20th, 2013 at 03:45 PM.

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