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  1. #1
    Fuel Injected!
    Join Date
    Mar 2013
    Posts
    1,470

    lt1 ee Injector tables

    One of my injector goes wide open and I decided to put stock ls1 since I have a set.
    While I was trying to figure voltage offsets and other stuff I found that lt1 pcm misses some important parameters.
    So I am going to add some new tables used in a ls1 calibration.

    table1 map vs voltage 3d table for voltage offset calibration.
    table2 map vs injector flow
    extending the low pulse offset adder table to 4ms, stock is around 2 ms.
    Goal is to reach super precision and accurate fueling in all fueling modes with rapid intake manifold pressure changes.
    The way I see it, PCM cant compensate enough for cammed cars due to different loads vs manifold pressure and stock pressure regulator not pulling enough.

    From the table below the injector flow change from 28 to 31 pounds by lowering MAP from 100 to 20 kp.{at high vacuum the injector flow more}

    Any thought and suggestions are welcome.
    When tables are ready the fuel pressure should be constant and the vacuum reference will be deleted.
    At later stage I willl try to increase the fuel pressure to stock ls1 to get a better spray pattern.

    First the new 3d table will be really huge 17x28.
    Is there any limits for table size for 68hc11 processor

    I need to convert the flow numbers
    28.708244
    28.894258
    29.080273
    29.266287
    29.452302
    29.576312
    29.762326
    29.948341
    30.134355
    30.258365
    30.444379
    30.630394
    30.816408
    30.940418
    31.126433
    31.312447
    31.436457

    from 58 psi to 43.5 psi

    And interpolate some stuff if I can`t get the voltage in 0.5 increments in the table.
    Last edited by kur4o; 11-10-2017 at 11:22 PM.

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