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How can you tell if cats are clogged or bad?

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Old 04-26-2005, 05:54 PM
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Default How can you tell if cats are clogged or bad?
Everytime that I check my exhaust tips they are black. What does that mean?

How do I know or can I tell if my CATS have clogged up or gone bad??


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Old 04-26-2005, 06:04 PM
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i dont think you have to worry about the black exhaust tips. mine are as well. just clean them up when you wash your car
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Old 04-26-2005, 06:07 PM
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For cloggee cats you will probley get an SES light. Your gas milage will go down and your car will sound wierd. Dont worry about you tips as mentioned.
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Old 04-26-2005, 07:49 PM
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and also if your cats go bad...you can somtimes look under the car at night..and see them glowing a little from being hot if they are clogged...
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Old 04-26-2005, 07:57 PM
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Thanks!!
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Old 04-26-2005, 07:58 PM
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Do you guys know if I should ditch the cats and weld in a straight pipe instead???
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Old 04-26-2005, 08:09 PM
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If they were clogged your power would be WAY down
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Old 04-26-2005, 11:09 PM
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Originally Posted by MetallicBluews6
Do you guys know if I should ditch the cats and weld in a straight pipe instead???
Only if you can handle the exhaust smell, emissions testing in your area?, and using 02 sims.

My Chevelle has duals out the back. No cats obviously. People remember me from high school by the way I smelled like xhaust
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Old 04-26-2005, 11:50 PM
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I have new o2 sims in a box!!
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Old 04-26-2005, 11:56 PM
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I hate cats, what do they actually do?
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Old 04-27-2005, 12:15 AM
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Originally Posted by RedHatRdRacer
I hate cats, what do they actually do?
Burn off un-burnt fuel.
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Old 04-27-2005, 12:17 AM
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Originally Posted by RedHatRdRacer
I hate cats, what do they actually do?
http://auto.howstuffworks.com/cataly....htm/printable
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Old 04-27-2005, 01:09 AM
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take em out, i've had mine out for a year, nd its alot better, the exhaust smell wont fill the car unless ur windows are down adn your in a confined area, but it does smell outback, but hey, everything has a price
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