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Thread: Why are 4.3L fuel table values all negative 1227747. What am I missing?

  1. #1
    Fuel Injected! kilohertz's Avatar
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    Why are 4.3L fuel table values all negative 1227747. What am I missing?

    I am trying to get decent start for a main fuel table for my 3.9L and thought the 4.3 would be close, but when I open the fuel tables, all the values are negative, as are the fuel adder values. The 5.0L look normal as do 5.7L. What am I missing here? Using 1227747 and xdf 5.9.3.

    I'm confused, help pls.

    Cheers!

    Well it seems it's the compare function not working properly..I can open the 4.3 BIN in a new instance of TP and the values look correct. Not sure why the compare function shows negative values but I'm moving on. I'll figure it out one day. sorry to waste bandwidth.
    Last edited by kilohertz; 12-30-2021 at 05:38 AM.
    '49 Ford F-47 Flathead with GM TBI
    '66 Corvair planning a GM TBI
    '68 Firebird ragtop 7427 TBI going in
    And a bunch of other cars and bikes

  2. #2
    Super Moderator dave w's Avatar
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    What is the BCC for the 4.3 liter?

    http://gearhead-efi.com/Fuel-Injecti...Information-42

    dave w

  3. #3
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    Negative numbers show the values are lower in the compare calibration. Look for a tick box for "show differences" or something similar.

  4. #4
    Fuel Injected!
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    Yup I think that's a Delta symbol at the top that toggles between difference between 2 bins or the actuals.

  5. #5
    Fuel Injected! kilohertz's Avatar
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    Quote Originally Posted by dave w View Post
    What is the BCC for the 4.3 liter?

    http://gearhead-efi.com/Fuel-Injecti...Information-42

    dave w
    AWDN 88 C-1500
    '49 Ford F-47 Flathead with GM TBI
    '66 Corvair planning a GM TBI
    '68 Firebird ragtop 7427 TBI going in
    And a bunch of other cars and bikes

  6. #6
    Fuel Injected! kilohertz's Avatar
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    Quote Originally Posted by 1project2many View Post
    Negative numbers show the values are lower in the compare calibration. Look for a tick box for "show differences" or something similar.
    You guys ROCK! Ya nailed it. It took me a while to find it, it's in one of the drop down menu items, but I found it, and that is exactly it, very cool. This software continues to amaze me.

    I just got home with a few new springs for the TBI regulator, trying to get my PSI back up a nice stable 13-15 PSI. Also picked up 2 new injectors, for $37 ea it's just not worth mucking around trying to clean old ones.

    Back to tuning.

    Thanks again for the help guys, it's really helping me move along the learning curve.

    Cheers
    '49 Ford F-47 Flathead with GM TBI
    '66 Corvair planning a GM TBI
    '68 Firebird ragtop 7427 TBI going in
    And a bunch of other cars and bikes

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