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Thread: I can't get pulse width low enough on siemens/mototron 60lb injectors

  1. #31
    Lifetime Member 5.7ute's Avatar
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    Quote Originally Posted by ryans1000 View Post
    yes i can check the fuel pressure. i wonder if the slight miss i was getting was the injectors not working properly because they couldn't handle the low pulsewidth.
    It's possible, but I would think that could possibly be from still being a bit lean.
    The Tremor at AIR

  2. #32
    Joe (Moderator) joecar's Avatar
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    Mick, check your email.

  3. #33
    Lifetime Member 5.7ute's Avatar
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    FWIW, I built that .cax file for the Holden platform & had a look at a few stock files. The Holden platform uses a much lower factory setting between 1.03-1.09ms, where the US platform is around 1.27ms. This is more than likely the reason why I never had the same issues getting a low enough PW when I run 60lbers on my car.
    I will be doing some quick tests on mine tonight to see if this table has any effect. Will keep you all posted.
    The Tremor at AIR

  4. #34
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    so this table you altered is a table that efilive doesn't normally show ?? so how did you find it or know about it?
    9.8@150 . LQ4 Turbonetics Billet 7575@18psi, 6 speed, non-intercooled with meth. Speed Density, open loop, no PE.

  5. #35
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    Quote Originally Posted by ryans1000 View Post
    so this table you altered is a table that efilive doesn't normally show ?? so how did you find it or know about it?
    After repeatedly pestering MICK for some cax files he sent me 2 .bin files that I could play with & attempt to build definitions for. With some maps etc I had found on the web a few years ago I managed to find what parameters I was chasing plus a bit more.
    I am still learning at this stage, but as long as I stay away from the code areas of the .bin file damage will be minimal.
    The Tremor at AIR

  6. #36
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    9.8@150 . LQ4 Turbonetics Billet 7575@18psi, 6 speed, non-intercooled with meth. Speed Density, open loop, no PE.

  7. #37
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    Quote Originally Posted by ryans1000 View Post
    Nah, just too much time on my hands at work.
    Just don't tell my boss.
    The Tremor at AIR

  8. #38
    Joe (Moderator) joecar's Avatar
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    Hey Mick,

    Ryan's file is COS3 based on a 2002 Camaro file... does that mean it's based on 12212156...?

    In my mind, the answer is yes...

    This means your 02020003 cax file also applies to 02020005 and 12212156... 3 birds with one stone... ...good job.

  9. #39
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    Quote Originally Posted by joecar View Post
    Hey Mick,

    Ryan's file is COS3 based on a 2002 Camaro file... does that mean it's based on 12212156...?

    In my mind, the answer is yes...

    This means your 02020003 cax file also applies to 02020005 and 12212156... 3 birds with one stone... ...good job.
    That's correct Joe. From what I can see so far (though I am not really looking as it is way beyond my skills) the COS's still use the same main table addresses, apart from the custom tables which either use a code change to change axis, or use other sections of the file, leaving the base calibration intact.
    The Corvette is in the shop trying to get it sorted for a Sunday prestart, ready for next weeks first round, so playing with mine has been put on hold till tomorrow. I will post up the results of the .cax test ASAP.
    If any of you are interested check out acracing.com.au. This car really is a work of art & makes the late nights bearable.
    The Tremor at AIR

  10. #40
    Member neil's Avatar
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    Nice looking Corvette Mick

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