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Old 07-17-2010, 03:16 PM   #1
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Question on Catalytic Converters

I have a set of secondary cats for sale that came off of my 986 "S". I have received several inquires from other boxster owners regarding compatibility with their base model . Clearly, the headers/pre cats are completely different between the "S" and "non S". However, are the secondary cats different between the two models ? Will they work with either engine ? Does anyone know ?
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Last edited by Johnny Danger; 07-18-2010 at 06:56 AM.
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Old 07-18-2010, 06:04 PM   #2
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Can anyone help with the answer ? Or should I go see Mr. Whoopee ?
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Old 07-19-2010, 09:02 AM   #3
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Quote:
Originally Posted by Johnny Danger
I have a set of secondary cats for sale that came off of my 986 "S". I have received several inquires from other boxster owners regarding compatibility with their base model . Clearly, the headers/pre cats are completely different between the "S" and "non S". However, are the secondary cats different between the two models ? Will they work with either engine ? Does anyone know ?
1997-1999 has a smaller pipe diameter & flange 3 bolt pattern so they will not bolt together. If you are refering to 2000- 2.7 pipes I am not sure but I bet if it is same gasket part # it probably is the same.
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Old 07-19-2010, 09:21 AM   #4
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Quote:
Originally Posted by BYprodriver
1997-1999 has a smaller pipe diameter & flange 3 bolt pattern so they will not bolt together. If you are refering to 2000- 2.7 pipes I am not sure but I bet if it is same gasket part # it probably is the same.

Yes, I am referring to the 2.7 engine. I know that the 2.5 has a completely different exhaust configuration. Thanks for pointing that out .
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Old 07-19-2010, 11:58 AM   #5
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Johnny, as far as I know, the 2.7 and 3.2 setups are the same by means of the secondary cats and are interchangeable.
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Old 07-19-2010, 12:23 PM   #6
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Originally Posted by chaudanova
Johnny, as far as I know, the 2.7 and 3.2 setups are the same by means of the secondary cats and are interchangeable.
Great. Thank you.
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