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Best cats for emissions

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Old Sep 13, 2012 | 11:10 AM
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Default Best cats for emissions

I have to pass a idle emissions test.
What brand cat is the best for doing what a cat is supposed to do?
i would assume a hi-flow would not be the one I'm looking for but I don't know.
Are aftermarket better than oem?
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Old Sep 18, 2012 | 08:14 AM
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no one?
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Old Sep 18, 2012 | 08:41 AM
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Aftermarket cats are not as good as oem cats. Generally oem is a 3 way catalyst and aftermarket is 2 way.
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Old Sep 18, 2012 | 08:52 AM
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Any OEM cats will do, most if not all aftermarket ones will not pass an actual sniffer test.
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Old Sep 18, 2012 | 04:22 PM
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Thanks for the replies

Originally Posted by Way2Fast
Aftermarket cats are not as good as oem cats. Generally oem is a 3 way catalyst and aftermarket is 2 way.
Does the aftermarket publicize their build specs anywhere?

Originally Posted by redtan
Any OEM cats will do, most if not all aftermarket ones will not pass an actual sniffer test.
I'd love to see an unbiased report of the OEMs & aftermarket folks.
I need to pass emissions
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Old Sep 18, 2012 | 09:36 PM
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Originally Posted by redtan
Any OEM cats will do, most if not all aftermarket ones will not pass an actual sniffer test.
this is not true, me and my brother used to pass smog all the time in cali with magnaflow high flows and strange high flows.

OEM cats will always out perform in the clean department, but highflows will win in the performance sector.
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Old Sep 20, 2012 | 01:53 AM
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i have a pair of new magnaflow cats that i cut off a magnaflow X-pipe before i installed it

$100 plus shipping and there yours (2.5in O.D.)
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Old Sep 20, 2012 | 07:39 PM
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Originally Posted by Blackbird-WS6
i have a pair of new magnaflow cats that i cut off a magnaflow X-pipe before i installed it

$100 plus shipping and there yours (2.5in O.D.)
What part# are they?

Why did you cut them off?
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Old Sep 21, 2012 | 10:47 AM
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Originally Posted by 95wannabe
What part# are they?

Why did you cut them off?
I took them off bc we dont need cats here and i didnt want them

I have to look on the cats to see if there is a part number
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Old Sep 21, 2012 | 10:51 AM
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I've always thought that magnaflow were the best cats you can buy.
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Old Sep 21, 2012 | 11:00 AM
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they stopped doing it in Minnesota
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Old Sep 28, 2012 | 11:56 AM
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As long as you get the correct converter for your vehicle our parts will allow you to pass emissions. Depending on your location and make, model and year we may have several options for you to choose from parts with heavier loads of precious metals (like OEM), direct fits or bolt on replacements. All of our converters are 3 way cats as well and all of them are high flow as well allowing for greater flow rates up to and around 10-40%. In regards to if our aftermarket parts are better than oem, they will do the same job and save you money. If you are looking at airflow our parts are better.
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Old Sep 28, 2012 | 12:06 PM
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Originally Posted by MagnaFlow_Rep
As long as you get the correct converter for your vehicle our parts will allow you to pass emissions. Depending on your location and make, model and year we may have several options for you to choose from parts with heavier loads of precious metals (like OEM), direct fits or bolt on replacements. All of our converters are 3 way cats as well and all of them are high flow as well allowing for greater flow rates up to and around 10-40%. In regards to if our aftermarket parts are better than oem, they will do the same job and save you money. If you are looking at airflow our parts are better.
Here's the numbers on a set I'm looking at used.
Can you tell me what they are?

CA/CE 99000
94100 10 04
93335 23374
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