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Thread: Min fuel milligrams

  1. #1

    Min fuel milligrams

    Is there a way to properly set this value for the injectors you use? I have searched but can't seem to find answer. I'm running Dekas 60's and my stock value was .028. My pulse width is 1.9 1.8 at idle.
    Read that sometimes this prevents a lower pulse width with bigger injectors so I lowered it to .018 same pulse width results. Can this setting help with a lean condition during throttle "quick" movements?
    03 SS Silverado,tvs2300,ID850,gt2-3,kooks, PRC 317'S,

  2. #2
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    As far as I know, only trial and error... I can be corrected but as far as I know it's affecting injection pulse w. when its at or near it's minimum, which is usually idle or during overrun/dfco. With bigger injectors the default can result in them going rich. 1.9 or so PW at idle is pretty normal imho, assuming your car isn't too modified, lol.
    99 TA, Texas Speed LS376, PRC heads, 233/239 cam, Fast 92mm, 95mm TB, card style MAF, Tick TR6060, Strange 4.11 12 bolt axle & clutchpack diff, Strano springs/dampers, Vette 18" wheels, Vette disks, CTS-V calipers, 16lb flywheel, long tube headers, no cats.

  3. #3
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    I was adjusting mine a bit trying to deal with lean tip-out. With Ford 36# injectors, I increased the value to .045 and was able to reel in the lean spikes. My idle IPW is ~2ms and my DFCO IPW is ~0.5ms. I only have a few other transient fueling tables, and none of them seemed to affect much (by trial and error, anyway).

  4. #4
    so this can help with a lean tip in? im dealing with that issue also. I might try to increase that value to help with the lean condition. I cant feel it but my wideband shows it. when I lowered the value from .028 to .018 there was no change in pulse width at idle so that tells me that I wasent hitting a floor.
    03 SS Silverado,tvs2300,ID850,gt2-3,kooks, PRC 317'S,

  5. #5
    Senior Tuner
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    2010 Camaro SS M6. Stock Bottom End, Heads/Cam/Intake/Headers/Exhaust.
    2005 Silverado RCSB. Forged 370 LQ9/Borg-Forced Inductions T6 S484/Jake's Stage 4 4L80E with D3 Brake/4WD.
    2023 Durango Hellcat

  6. #6
    Min INJ PW divided by 31.124308

    As an example, my Min INJ PW is 1.5ms (based on FIC inj data)

    1.5/31.124308=.014
    94 BB Rx-7 02 LS1

  7. #7
    Is that 1.5 what you see at idle or on deaceleration?
    03 SS Silverado,tvs2300,ID850,gt2-3,kooks, PRC 317'S,

  8. #8
    Senior Tuner
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    Quote Originally Posted by Exidous View Post
    Min INJ PW divided by 31.124308

    As an example, my Min INJ PW is 1.5ms (based on FIC inj data)

    1.5/31.124308=.014
    You sure about your math? Last I checked, 1.5/31.124308 = 0.048.
    2010 Camaro SS M6. Stock Bottom End, Heads/Cam/Intake/Headers/Exhaust.
    2005 Silverado RCSB. Forged 370 LQ9/Borg-Forced Inductions T6 S484/Jake's Stage 4 4L80E with D3 Brake/4WD.
    2023 Durango Hellcat

  9. #9
    0.48 x 31.124308 = 1.49
    03 SS Silverado,tvs2300,ID850,gt2-3,kooks, PRC 317'S,

  10. #10
    .048 I meant
    03 SS Silverado,tvs2300,ID850,gt2-3,kooks, PRC 317'S,