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Anyone know when 355 cats changed from ceramic core to metallic?

Discussion in '348/355' started by Targatime, Dec 12, 2020.

  1. Targatime

    Targatime Karting
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    Feb 22, 2014
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    Los Angeles
    #1 Targatime, Dec 12, 2020
    My car, a '98 model year (built Nov '97) has stock cats. I saw in a past thread that late 355 cats used a better converter material, but haven't been able to pin down when the switch happened. Trying to figure out what's in my car. Thanks for any guidance.
     

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  2. Qavion

    Qavion F1 Rookie
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    Ian Riddell
    #2 Qavion, Dec 12, 2020
  3. Targatime

    Targatime Karting
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    #3 Targatime, Dec 12, 2020
    Ah, thanks. Probably no way to know without taking a look.
     
  4. Kokose7en

    Kokose7en Karting
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    Dec 5, 2019
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    #4 Kokose7en, Dec 13, 2020
    If you just want to visually look if it is ceramic or metallic. Use a bore scope camera like this. All you would need to do is remove one of the O2 sensors.
    It doesn’t have to be a snap-on brand. You could easily find other cameras for less than $100.
    Image Unavailable, Please Login
     
  5. Targatime

    Targatime Karting
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    #5 Targatime, Dec 13, 2020
    Last edited: Dec 13, 2020
    Thanks -- good idea. I have a great boroscope, one of the $20 cams that plugs into your cellphone. My car has 37k miles and no record of cats being changed. Hard to believe they're original ceramic so I'm wondering what's in there.
     

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  6. taz355

    taz355 F1 Veteran
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    #6 taz355, Dec 30, 2020
    My 99 had ceramic and had to be replaced twice within 10,000 miles
     

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