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post #1 of 5 Old 07-30-2005, 11:10 PM Thread Starter
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Catalytic converter removal

Hi, I have a '97 dakota 4x4 with the 5.2 and I was wondering can you remove the large catalytic converter? I'm asking because I drive it in grassland frequently and don't want to start a fire. Will the removal screw with the computer because I see some wires sticking out the back of it. Also is it illegal to do? I don't want to break the law. Thanks.
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post #2 of 5 Old 07-31-2005, 09:53 PM
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Anything that you do to the Cat will screw up the computer and prevent a passing vehicle inspection. Try an exhaust diverter valve to bypass the whole thing. Who cares about noise level when you are out in the middle of a field.

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post #3 of 5 Old 07-31-2005, 10:28 PM
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The only problem with a diverter valve, is will end up popping a couple of flames out from time to time...The only thing that you have to do is to remove the O2 sensor...that's the wires hanging out, and remove the cat...Now depending on where you live, it is or is not against the law...You can take it off and fear nothing if your town does not do emissions testing, but if so, as long as the tester does not get under the truck to look and see that it's not there, the computer will not show a code. By the way when you pull the O2 sensor, just tie wrap it up on the frame rail.

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post #4 of 5 Old 08-01-2005, 11:10 AM Thread Starter
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I live in a rural part of South Dakota so there is no emission testing around here. So I might look into having it done.
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post #5 of 5 Old 08-01-2005, 02:04 PM
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If you remove the CAT completely, you can still start fires because you now have nothing stopping sparks from leaving your exhaust.

I have the same truck as you and I replaced the cat with an aftermarket one and had a problem with the rear o2 sensor. The computer needs both of them to function correctly. The rear one is less important.

If you want to remove it all together and you are not worried about the emissions or the sparks, modify the o2 sensor but leave it in the exhaust downstream of the first one.

Read the post by Conig. Thats what I did.
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