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Old 02-07-2008, 11:55 PM   #15
ZeppelinPie792
Scooby Newbie
 
Member#: 160287
Join Date: Sep 2007
Chapter/Region: TXIC
Location: Around Austin, TX
Vehicle:
2007 Impreza 2.5i SE
Newport Pearl Blue

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Quote:
Originally Posted by 8Complex View Post
Just curious, but what would an extension be used to fix? Even with my turbo kit on, I have never had a problem.
With an after market cat-pipe, like a high flow cat, the rear O2 sensor is at the end of the pipe. It is too far away for your stock one to reach.


I also heard something about it somehow fixing the CEL, which I don't see how.
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