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Thread: HELP ME PLEASE!!! Minimum pulse width?

  1. #11
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    I can email the data, if you wanna give me your email. You can also text me @ 6206755626
    -John

    1991 RCSB 2WD Sierra LQ4 swap, 220/224 112 cam, Twin VSR 6766 turbos
    4L80e w/shift kit, PY 3600, and 3.73 gears.
    22 PSI and E85, 4300# with driver. 9.7@138, 1.47 sixty
    :drivin:

  2. #12
    Lifetime Member 5.7ute's Avatar
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    0.125ms is the same as what ID injectors specify IIRC. FIC have reportedly "borrowed" this data from ID and passed it off as there own.
    You will need to load the cax file for B9021 to be able to modify this parameter. Look here: https://forum.efilive.com/showthread...ighlight=B9021
    The Tremor at AIR

  3. #13
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    I'd be interested in having a look at the borrowed data. Tuning@team208motorsports.com

  4. #14
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    Quote Originally Posted by 5.7ute View Post
    0.125ms is the same as what ID injectors specify IIRC. FIC have reportedly "borrowed" this data from ID and passed it off as there own.
    You will need to load the cax file for B9021 to be able to modify this parameter. Look here: https://forum.efilive.com/showthread...ighlight=B9021
    In regards to a PW that low. The short pulse info would have to be within a few percent accurate. I know most places stop testing around 1ms and fudge below that part.

  5. #15
    Lifetime Member 5.7ute's Avatar
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    All the info can be found here http://injectordynamics.com/articles...s-but-cheaper/
    What you need to remember is that the 0.125ms is the fuelling portion of the pulsewidth which when added to the offsets etc give the final pulsewidth. There are some great articles on that site that breakdown the GM injector model, making things much clearer.
    The Tremor at AIR

  6. #16
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    I totally get that but my point was, in the tune in question, small pulse offsets are not even being used.
    Last edited by ProperTuningOG; June 20th, 2017 at 05:50 PM.

  7. #17
    Lifetime Member 5.7ute's Avatar
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    From what I understand he incorrectly lowered the short pulse adder threshold to bring the final pulsewidth down, without realising the pcm is hitting a pulsewidth floor that lowering B9201 will address.
    The Tremor at AIR

  8. #18
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    Thanks guys, I'm gonna look into the B9021 settings and see what that does

    Edit: B9021 lol
    Last edited by LS1FREEK; June 21st, 2017 at 12:33 PM.
    -John

    1991 RCSB 2WD Sierra LQ4 swap, 220/224 112 cam, Twin VSR 6766 turbos
    4L80e w/shift kit, PY 3600, and 3.73 gears.
    22 PSI and E85, 4300# with driver. 9.7@138, 1.47 sixty
    :drivin:

  9. #19
    Joe (Moderator) joecar's Avatar
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    B9021


    ( I'm sidlexyc too )

  10. #20
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    I'm finding various data sheets on the bosch 1000s. Which version do you have height wise?

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