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  1. #1

    Join Date
    12 May 2019
    Location
    North Carolina
    Posts
    3
    Saab(s)
    2005 9-3 convert
    Thumbs Up:   0

    After market cat back exhaust

    Hello to everyone.....

    I will try and keep this short. 2006 9-3 2.0T manual trans. I replaced the factory exhaust with a cat back replacement, now the check engine light is on. Was told to have car tuned for the new exhaust or live with it. The other option was to reinstall the factory system to clear the CEL. Any help with clearing the CEL would be great. (The code shows leak in emission)

    Thanks

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  2. #2
    Dave T.
    Super Moderator Dave T's Avatar
    Join Date
    03 Aug 2010
    Location
    near Seattle, Washington
    Posts
    1,343
    Saab(s)
    1999 9-3SE (2013-2015), 2005 9-3 (2005-2013), 1990 900 (1990-2003)
    Thumbs Up:   25
    I used to have a 2005 9-3 2.0t but did not change the exhaust. If the CEL code states a leak then either it's a leak or maybe down flow pressure is reduced (which is what you probably wanted) but triggered a CEL. Might have to figure out which one it is.

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  3. #3

    Join Date
    12 May 2019
    Location
    North Carolina
    Posts
    3
    Saab(s)
    2005 9-3 convert
    Thumbs Up:   0
    Dave T

    I never had a CEL until I replaced the exhaust system.. so I will have to go with down flow pressure reduced...

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