Using low impedance injectors?

Discussion in 'Technical' started by e-z, Nov 11, 2012.

  1. e-z

    e-z New Member

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    I'm doing a little testing, and what would be required to run low impedance injectors? Nothing I assume as lower resistance won't be a problem like the vice versa would be?
     
  2. e-z

    e-z New Member

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    like this?
    i have one in the car im building already
    [​IMG]
     
  3. Sanouske

    Sanouske Retired Moderator

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    Holy huge photo batman.

    Yeah that's the critter. It's easy to work out which resistors you need to make your setup work. What are the injectors you're wanting to use reading at? And what ecu were you using again?

    I plan to use 560cc evo injectors in a build but prob ditch the stock ecu for aftermarket but same difference. They're low an need a resistor box.
     
  4. e-z

    e-z New Member

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    sorry about the image lol
    z32 mines ecu, with top feed ca18det 370cc injectors. on a rb30
     
  5. Sanouske

    Sanouske Retired Moderator

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    Lol what a mixed bag. Ecu needs 10-14 ohms. Injectors are 2-3 ohms? You'll need 4x 6-7 ohm porcelain resistors. Then you'll be a happy camper. Jaycar sell them. Cheap as. Be sure to mount them somewhere where the heat can be dissipated easily.

    This actually reminds me of what I have to build yet. Z32 ecu with rb injectors on a injected L28 Datsun donk... Fun times.
     
  6. e-z

    e-z New Member

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    Lol sounds awesome :) running a vg/rb25 cas? I'm making an adaptor to mount the cas on TE rb30 dizzy
    How and where would one wire the resisters
     
    Last edited: Nov 14, 2012
  7. Sanouske

    Sanouske Retired Moderator

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    Yeah, will be fun when done. Ours is for a rally car. Im machining up a alloy adapter block that will run the cas in replacement of the dissy. OR be using a l28et dizzy as they are optical like the vg cas.

    As for the resisters. They're wired in line from the fuse to the injectors.
     
  8. Sanouske

    Sanouske Retired Moderator

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    This is from the S13 CA18det FSM.

    The dropping resisters are circa 6 Ohms it said.

    Wire it like so.

    [​IMG][/img]
     
  9. e-z

    e-z New Member

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    So from that diagram it's just wired into the power feed for each injector, easy!
    When you say 4 resisters do you mean 6?
    Was 4 referring to the ca18 setup?
     
  10. Sanouske

    Sanouske Retired Moderator

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    Lol, yes my mistake. 6. You need 6.
     
  11. e-z

    e-z New Member

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    legend
     

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