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HHR SS How many cats?

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Old

Sep 16, 2017 | 04:54 PM

#1

ULOS2A6

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Joined: 02-10-2013

Posts: 98

From: Fullerton,Ca

HHR SS How many cats?

Does the HHR SS have 2 cats stock? I bought mine with a Hahn downpipe and I only have 1 cat. Curious because of smog testing etc.

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Old

Sep 16, 2017 | 05:18 PM

#2

RJ_RS_SS_350

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Joined: 05-01-2014

Posts: 8,512

From: California

2 cats. GM P/N 25816005 for Manual trans, 25816006 for auto.

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Old

Sep 16, 2017 | 06:41 PM

#3

donbrew

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Joined: 01-23-2009

Posts: 26,532

From: Fredericksburg,VA

I thought in California the cat has to have CARB cert label on it if it is not from the factory.

Be sure to check for yourself.

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Old

Sep 16, 2017 | 06:46 PM

#4

ULOS2A6

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Joined: 02-10-2013

Posts: 98

From: Fullerton,Ca

Quote:

Originally Posted by donbrew

I thought in California the cat has to have CARB cert label on it if it is not from the factory.

Be sure to check for yourself.

Hey guys,
Thanks for the info. My smog place doesn't usually check for carb certifications. He knows me and usually just tests my cars and if they pass all is good.

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