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FABIO header sensors

Discussion in '456/550/575' started by stevepaa, Mar 29, 2021.

  1. stevepaa

    stevepaa Formula Junior

    Apr 5, 2006
    549
    san jose, ca
    Full Name:
    steve
    where do you connect the 8 lambda sensors and 2 thermocouples to FABIO headers on 575?
     
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  3. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    33,610
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
    There are connectors for all of them.
     
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  4. stevepaa

    stevepaa Formula Junior

    Apr 5, 2006
    549
    san jose, ca
    Full Name:
    steve
    okay, i just could not see them from the header pics.
    so no error codes at all, no reprogramming of an ecu?
     
  5. Qksilver

    Qksilver F1 Rookie
    Silver Subscribed

    Feb 11, 2005
    3,803
    Philadelphia
    Full Name:
    Joe
    No CEL or programming needs on mine.
     
  6. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    33,610
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
    No, chugs a little on cold start while figuring out the air/fuel mixture, but smooths out quickly.
     
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  8. ifeelfree0

    ifeelfree0 Formula Junior
    Silver Subscribed

    Feb 26, 2014
    311
    Medina, Ohio
    Full Name:
    Dan
    Interesting. Mine has this “asthmatic attack” also on start up but I have had CELissues since install. Curious if any other Fábio owners have experienced the rougher start up??
     
  9. Auraraptor

    Auraraptor F1 World Champ
    Lifetime Rossa Owner

    Sep 25, 2002
    11,535
    MO
    Most OB2 engines have recirculation of exhaust to speed up CAT warming which also increases cold start backpressure. With the marked improvement in flow, I would expect that on start up.

    My question is do you notice any resonance ?
     

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