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Vescovini boxes on 360

Discussion in 'Technical Q&A' started by MD355, Nov 4, 2012.

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  1. MD355

    MD355 Formula Junior

    Mar 8, 2004
    802
    Athens, Greece
    Full Name:
    MD
    #1 MD355, Nov 4, 2012
    Does anyone know if the Vescovini boxes on a Ferrari 360 (exhaust ECU boxes that check exhaust temperature and show SLOW DOWN when catalyst overheats or ECU box mulfuctions) affect in any way performance of the engine besides triggering a SLOW DOWN and a CEL when there is a problem ?

    The reason why I am asking this is because I recently replaced the right side exhaust ECU box to solve a SLOW DOWN problem (even when the engine was not warm) but I now sense a slight hesitation from the engine when I release gas pedal and reapply it after a gear change.
    (car is manual with brand new clutch and throw out bearing, so no transmission issues here)

    The engine just hesitates for a second and then picks up.

    Could it be that the left side Vescovini box is now cutting power from the left bank (no SLOW DOWN or CEL yet) because it is about to go bad ?

    Should I replace it so that both sides are new ?

    Thanks !
     
  2. finnerty

    finnerty F1 World Champ

    May 18, 2004
    10,406
    #2 finnerty, Nov 4, 2012
    Did you re-set your (main) ECU after hooking up the new exhaust temp ECU ? I honestly don't know whether or not it makes a difference, but it may be worth trying.....
     
  3. rustybits

    rustybits F1 Rookie
    Professional Ferrari Technician

    Jan 28, 2007
    2,509
    Somewhere, anywhere
    Full Name:
    Eddie B
    #3 rustybits, Nov 5, 2012
    It would cut a bank, not cause poor acceleration. I'd say you should look elsewhere, possibly at the MAF signal output using a 'scope.
     

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