Is the second catalytic converter necessary?

Discussion in 'CX-7 Engine/Transmission/Drivetrain' started by AboveAverageJoe., Apr 10, 2019.

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  1. AboveAverageJoe.

    AboveAverageJoe. Greenie Member

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    Is the second catalytic converter necessary for anything other than emissions on a turbo car? Just curious. I didn't know there was two converters on my 2008 CX-7 until today.
     
  2. Rgurleyjr

    Rgurleyjr Greenie Member

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    catalytic converters necessary for only emissions, thats all.
     
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  3. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

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    On the ms3 the second cat is unmonitored and usually removing it is one of the first mods someone will do as it doesn't throw a CEL. might be the same on the cx7
     
    Easter Bunny, via a mobile device, Apr 11, 2019
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  4. Raider

    Raider Administraider Administrator Platinum Member

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    You can remove it
     
    Raider, via a mobile device, Apr 11, 2019
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  5. AboveAverageJoe.

    AboveAverageJoe. Greenie Member

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    Thanks everyone. I didn't see any sensors on it and actually thought it was a resonator. That was until the connection on the rear of it broke away from the pipe. What does it sound like?

    [​IMG]
     
  6. Rgurleyjr

    Rgurleyjr Greenie Member

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    I don't understand what your asking? If the pipe connection broke at the catback then it'll be loud.
     
    Rgurleyjr, via a mobile device, Apr 11, 2019
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  7. DubC

    DubC Greenie Member

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    What’s the point of pic? Not sure if you’re trying to show something here.


    Sent from my iPhone using Tapatalk
     
    DubC, via a mobile device, Apr 11, 2019
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  8. AboveAverageJoe.

    AboveAverageJoe. Greenie Member

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    It's not too loud. Cat.jpg
    [doublepost=1555025154][/doublepost]
    Click on the pic, it will take you to the video and play it.
     

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  9. AboveAverageJoe.

    AboveAverageJoe. Greenie Member

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    All fixed, I was too busy to fix it myself so I took it it to a place. Not really a muffler shop but the work is just as good and a lot cheaper. Excuse the out of focus pic. I used a turnip because it was cheaper than a potato. I think it said Sandford & something on the gate. Turnip pic.jpg
     
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  10. Alpha Wolf

    Alpha Wolf Greenie Member

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    If you live in a state like California (I do) they check for these so I cannot remove them.
    Note that Versa Tuner did allow me to pass my check when put back to stock. Thanks again Versa Tuner.
     
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