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Thread: larger high impedance injectors

  1. #1
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    Default larger high impedance injectors

    i've been looking for some larger injectors, right now i'm running rc racings 750cc or 72lbs/hr @ 43psi. i'm running 60psi and don't want to run anymore fuel pressure. I know you can get a conversion controler to run low impedance injectors but was hoping that there was something around a 100lbs/hr that was still in a high impedance in a bosh stile top feel injector.
    thanks for any info.

  2. #2
    Member 427's Avatar
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    Quote Originally Posted by 496chevy View Post
    i've been looking for some larger injectors, right now i'm running rc racings 750cc or 72lbs/hr @ 43psi. i'm running 60psi and don't want to run anymore fuel pressure. I know you can get a conversion controler to run low impedance injectors but was hoping that there was something around a 100lbs/hr that was still in a high impedance in a bosh stile top feel injector.
    thanks for any info.
    Dont think i have ever seen a high imp 100 pound injector-

  3. #3
    Joe (Moderator) joecar's Avatar
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    I believe the biggest high impedance (12Ω) injector is 72lb/hr.

  4. #4
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    These are the biggest ones I know about.
    http://www.racetronix.com/01D129xFM.html

    They are very hard to tune at idle though, I don't think you can run under a 3.7mS pulse width.

  5. #5
    Joe (Moderator) joecar's Avatar
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    Update courtesy of MSURacing: 79lb/hr is the biggest 12Ω injector so far.

  6. #6
    EFILive Reseller ringram's Avatar
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    They will be over 100lb with 4 bar surely?
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  7. #7
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    At 4 bar, 58psi, the 79 lb/hr's are a little over 91 lb/hr's.
    They really get hard to do a good idle cal with though, you are lucky if it will run at 11.5:1

  8. #8
    Joe (Moderator) joecar's Avatar
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    We're assuming the rating "standard" (if it can be called that) of 3 bar.

  9. #9
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    Check the RX7 1984 or so... I believe it to be 100# and its high Z
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  10. #10
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    its a pita to tune injectors
    01 Z06, 4L60E CONVERSION, L92/L76 TOP END, 72# LS3 INJECTORS (THANKS FIC), DRY NITROUS, COS5

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