Is the second catalytic converter necessary?

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.

 

catalytic converters necessary for only emissions, thats all.

 

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

 

You can remove it

 

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?

 

I don't understand what your asking? If the pipe connection broke at the catback then it'll be loud.

 

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


Sent from my iPhone using Tapatalk

 

It's not too loud.
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Click on the pic, it will take you to the video and play it.

 

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.

 

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.