Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

Catalytic

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Old Nov 8, 2021 | 09:19 AM
  #1  
Douglas1's Avatar
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Model: Cherokee (XJ)
Default Catalytic

Does removing the catalytic converter help with economy or power? i dont need it in my state sooooo?
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Old Nov 8, 2021 | 10:15 AM
  #2  
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From: Long Island, New York
Year: 2001
Model: Cherokee (XJ)
Engine: 98 stroked 4.7
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what year
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Old Nov 8, 2021 | 11:41 AM
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00t444e's Avatar
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From: Southern OH
Year: 1997
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Get rid of it.
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Old Nov 8, 2021 | 11:52 AM
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From: San Mateo, CA
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0 Renix, stock.
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When properly working, i.e. not clogged, a catalyst has negligible effect on fuel use nor power output. If clogged, it can do lots of harm to both. As long as it works, leave it attached. The folks on the trail following behind you will appreciate that.

I have temporarily removed a cat and ran a test pipe when I had a clogged cat, and noticed no difference once a new cat was installed. If you are seeking power and fuel economy, removal of a good cat wont gain you what you seek.
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