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328 Cat questions

Discussion in 'Technical Q&A' started by GrigioGuy, Jan 20, 2005.

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  1. GrigioGuy

    GrigioGuy Splenda Daddy
    Lifetime Rossa Owner

    Nov 26, 2001
    33,407
    E ' ' '/ F
    Full Name:
    Enzo Gorlomi
    #1 GrigioGuy, Jan 20, 2005
    I'm putting the catalytic converter back on my 328. It's been in a box for a year, but I checked it before it went back on, and the matrix inside looked fine.

    When I fired it up, the exhaust smelled "heavier" than before with the resonator, and when I turned it off a few minutes later, there was threads of smoke/exhaust/vapor(?) coming out of the exhaust for quite a while afterwards.

    Is this normal? Does the cat need to burn back in after being unused for a year?
     
  2. GrigioGuy

    GrigioGuy Splenda Daddy
    Lifetime Rossa Owner

    Nov 26, 2001
    33,407
    E ' ' '/ F
    Full Name:
    Enzo Gorlomi
    #2 GrigioGuy, Jan 23, 2005
    Followup.

    I just ran it up to operating temps a few times and all the symptoms disappeared.
     
  3. Mule

    Mule F1 Rookie
    Owner Rossa Subscribed

    Jun 25, 2003
    3,758
    Alaska
    Full Name:
    Mule
    #3 Mule, Jan 23, 2005
    Excellent. I am considering a Hyper-Flow cat, and my original will sit on the shelf. Good to know it will keep.
     
  4. AJS328

    AJS328 F1 Veteran
    Owner

    Apr 23, 2003
    7,520
    New Jersey
    Full Name:
    Augustine Staino
    #4 AJS328, Jan 23, 2005
    I installed a Hyper-Flow cat on my last two 328's and I've been very happy with it. The customer service is also unbeatable. Just ask for Troy and tell him I sent you.
     

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