FiveOMotorsports injectors for 550? | FerrariChat

FiveOMotorsports injectors for 550?

Discussion in '456/550/575' started by niftyfivefifty, Oct 12, 2020.

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  1. niftyfivefifty

    niftyfivefifty Formula Junior
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    Mar 5, 2007
    366
    PacNW
    #1 niftyfivefifty, Oct 12, 2020
    I may need a new injector, and the 4 port model from FiveOMotorsports looks interesting. It looks like I could do all 12 for the cost of 2-4 OEM units. Is anyone here running them in their 550? Thanks!
     
  2. 00 550

    00 550 Formula Junior

    Oct 20, 2009
    412
    FL
    Full Name:
    That guy
    #2 00 550, Oct 12, 2020
    I bought one, not a whole set and it did not solve my misfire issue
     
  3. niftyfivefifty

    niftyfivefifty Formula Junior
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    PacNW
    #3 niftyfivefifty, Oct 12, 2020
    Very interesting, I wonder if it is because the FiveO injector has a lower impedance (14.7 vs. 15.9). Not a big difference, but maybe enough for things to get weird. I am very curious about how 12 of them would perform.
     
  4. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    38,038
    Clarksville, Tennessee
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    Terry H Phillips
    #4 tazandjan, Oct 13, 2020
    Have you had your injectors cleaned and resealed?
     
  5. niftyfivefifty

    niftyfivefifty Formula Junior
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    #5 niftyfivefifty, Oct 14, 2020
    Yes, and unfortunately it did not fix the issue.
     
  6. hwyman

    hwyman Formula Junior

    Jun 25, 2015
    329
    Canada / Los Angeles
    #6 hwyman, Oct 16, 2020
    I could be wrong but it appears the 550 oem injectors have some unique operating parameters...like as you mentioned the impedance. I recall reading that other similar injectors don't work right. I could be wrong tho
     
    308 GTB likes this.
  7. INTMD8

    INTMD8 F1 Veteran
    Owner

    Jun 10, 2007
    6,502
    Lake Villa IL
    #7 INTMD8, Oct 16, 2020
    Injectors have many specific characteristics aside from absolute flow rate. Highly suggest you don't stray from OEM unless you have the ability to recalibrate the ecu for the new parts.

    Even then, you need to be very careful about buying quality/matched components with usable/correct characterization data.
     
    308 GTB likes this.

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