Thermocouple / Cat Temp Control Unit Question | FerrariChat

Thermocouple / Cat Temp Control Unit Question

Discussion in '456/550/575' started by Auraraptor, Sep 5, 2025.

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  1. Auraraptor

    Auraraptor F1 World Champ
    Lifetime Rossa Owner

    Sep 25, 2002
    14,087
    MO
    Full Name:
    Omar
    There are three Thermocouple solutions currently available.

    1. NOS OEM (P/N supersession order 173533 vs 179278 vs 160454), x2 used
    2. Technistrada, x2
    3. Scud Ing, x1 needed to replace both)

    When the OEM fails (known weak link, they are mounted too close to the cats and slowly cook over time), they tend to throw SLOW DOWN lights.

    Welcome thoughts on pro-cons of each solution. For me I also want a solution that wont trigger a CEL with too low temperatures if/when I end up getting headers. Not sure if Scud Ing's solution may help me there. I need to talk to them.
     
  2. Auraraptor

    Auraraptor F1 World Champ
    Lifetime Rossa Owner

    Sep 25, 2002
    14,087
    MO
    Full Name:
    Omar
  3. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,488
    Sydney
    Full Name:
    Ian Riddell
    Depends on how keen you are to keep the car original. Having said that, the cat ecus are not so visible.

    How does Scud-Ing Swiss' prices compare to Technistrada's?

    Do you have cats? You could always fit Technistrada's cat ecu bypass plugs if you don't.
     
  4. Auraraptor

    Auraraptor F1 World Champ
    Lifetime Rossa Owner

    Sep 25, 2002
    14,087
    MO
    Full Name:
    Omar
    $440+shipping vs $610+shipping

    Yes I have cats.
     
    Qavion likes this.
  5. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,488
    Sydney
    Full Name:
    Ian Riddell
    Personally, I wouldn't want a bright red (?) box ziptied somewhere in the engine bay. It would look very aftermarket.
     
    Rifledriver likes this.
  6. lopena

    lopena Formula Junior
    Rossa Subscribed

    Nov 3, 2003
    766
    I installed the Technistrada ECU and thermocouple on my 575M two years ago…the “slow down” never came back on again. Installation was a little fussy but very doable if you’re not all thumbs. The updated ECU can’t been seen once installed. I’m very happy with the upgrade.

    Alan
    N.J.

    N.J. Image Unavailable, Please Login
     
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