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Thread: Is EFI injector high or Low impedance?

  1. #1
    Supporting Member II Turbo Mopar Contributor
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    Is EFI injector high or Low impedance?

    I checked the FSD but did not find the impedance.
    Regards,
    Miles

    DD '87 Sundance T1, 12PSI, SLH with rear disks
    '87 CSX #432

  2. #2
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: Is EFI injector high or Low impedance?

    You mean our stock injectors? They're low impedance.

  3. #3
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    Re: Is EFI injector high or Low impedance?

    Quote Originally Posted by cordes View Post
    You mean our stock injectors? They're low impedance.
    Thanks Brian for your reply,
    I am pseudo reverse engineering the functionality of the SBEC2
    I agree that the Turbo injectors are generally low impedance except for a few high versions in the very early 80's.
    The V6 injectors appear to be high impedance and indeed use different circuitry at the injector driver.
    I am looking at the EFI injector to better understand the driver circuitry thus my desire to determine if the EFI injector is high or low impedance.
    Too bad I threw out three EFI injectors during my fall cleanup.
    Regards,
    Miles

    DD '87 Sundance T1, 12PSI, SLH with rear disks
    '87 CSX #432

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    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: Is EFI injector high or Low impedance?

    Which injectors, specifically, are you wanting to test?

  5. #5
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    Re: Is EFI injector high or Low impedance?

    I am looking for the impedance of the EFI injector, the one located in the TB of the non turbo units
    Regards,
    Miles

    DD '87 Sundance T1, 12PSI, SLH with rear disks
    '87 CSX #432

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    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: Is EFI injector high or Low impedance?

    Quote Originally Posted by chromguy View Post
    I am looking for the impedance of the EFI injector, the one located in the TB of the non turbo units
    Thanks. I thought you were going after a TBI injector, but I wasn't sure. Unfortunately, I too have thrown out or given away all of my Carb/TBI stuff. If I get to the yard before you get this done, I'll certainly pull one for you.

  7. #7
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    Re: Is EFI injector high or Low impedance?

    Thanks Brian,
    I will be visiting a friend over the next few weeks with a 2.5 EFI so I may check at that point
    Regards,
    Miles

    DD '87 Sundance T1, 12PSI, SLH with rear disks
    '87 CSX #432

  8. #8
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    Re: Is EFI injector high or Low impedance?

    If you can find someone with the part number for the injector there are sites that i can use to find the impedance.

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    Supporting Member II Turbo Mopar Contributor 85lebaront2's Avatar
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    Re: Is EFI injector high or Low impedance?

    I downloaded a complete list, unfortunately a lot of the Chrysler ones have incomplete information. It includes all makes. It is Stan Weiss' electronic fuel injector flow data table.
    "growing old is inevitable, growing up is optional"
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  10. #10
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    Re: Is EFI injector high or Low impedance?

    Quote Originally Posted by masterjr33 View Post
    If you can find someone with the part number for the injector there are sites that i can use to find the impedance.
    OK I will give it a go as I believe I should be able to find the part number. I checked 4554101 TBI but could not find impedance value, I will have a better look later

    - - - Updated - - -

    Quote Originally Posted by 85lebaront2 View Post
    I downloaded a complete list, unfortunately a lot of the Chrysler ones have incomplete information. It includes all makes. It is Stan Weiss' electronic fuel injector flow data table.
    I think I may have this table as well
    Last edited by chromguy; 04-15-2019 at 09:48 AM.
    Regards,
    Miles

    DD '87 Sundance T1, 12PSI, SLH with rear disks
    '87 CSX #432

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    Re: Is EFI injector high or Low impedance?

    cc /mingrams /minPSIBARSlbs/hrcc /min80%95%FeedImped
    ance
    Application



    0-280-150-665 TBI60.0630.6453.643.53.060630.692.3109EV10LowChrysler 2.5l

  12. #12
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    Re: Is EFI injector high or Low impedance?

    630 cc

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