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Injector Impeadance

Discussion in 'FAST Support Forum' started by Russ67scode, Nov 25, 2018.

  1. Russ67scode

    Russ67scode Member

    Joined:
    Oct 6, 2016
    I have done some searches here and on the internet, What does the XFI 2.0 W/TC need for injectors does the driver work with low or hi impeadance injectors?? I currently have Holley Low impeadance injectors I have had one stuck open and one closed looking to get a new set and wanted to insure what I pay $500 for is the correct set. Thanks 520 ci FE (twin turbo comming) 120 lb/hr holley injectors
    Thanks Russ
     
  2. A A

    A A Well-Known Member

    Joined:
    Jun 22, 2014
    You can use either with the XFI 2.0. FAST systems come with high impedance injectors when included.
     
  3. Russ67scode

    Russ67scode Member

    Joined:
    Oct 6, 2016
    Thanks
     
  4. Russ67scode

    Russ67scode Member

    Joined:
    Oct 6, 2016
    One more question do you need to tell the computer if you are running hi or low Z injectors? I haven’t found anything so far from what I understand they operate differently as far as how they are driven
    Thanks Russ
     
  5. Fastmanefi

    Fastmanefi Well-Known Member

    Joined:
    Jun 4, 2011
    Location:
    Sonora, CA
    Read the blog on my website. fastmanefi.com
     
  6. Russ67scode

    Russ67scode Member

    Joined:
    Oct 6, 2016
    Thanks. I had read your blog about the voltage collapse and the hold voltage ect. But sorry I didn’t see an answer to my question about if the computer needs to be told high or low Z injectors are being used
    Thanks Russ
     
  7. Fastmanefi

    Fastmanefi Well-Known Member

    Joined:
    Jun 4, 2011
    Location:
    Sonora, CA
    There is no place in the FAST software to enter the injector type. That's why you have to be careful if you parallel connect low-Z injectors. Holley and other systems want to know so the best driver is applied by the software.
     

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