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Thread: Downpipe

  1. #1
    Senior Member Three Rings Maimonea77's Avatar
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    Downpipe

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    Does anyone have a solution on how to not trigger the check engine light with downpipes? Do o2 spacers work? I have some o2 spacers but the check engine light comes back pretty quickly. Any suggestions would be appreciated.


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  2. #2
    Veteran Member Four Rings Gunnarrrrr's Avatar
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    Quote Originally Posted by Maimonea77 View Post
    Does anyone have a solution on how to not trigger the check engine light with downpipes? Do o2 spacers work? I have some o2 spacers but the check engine light comes back pretty quickly. Any suggestions would be appreciated.


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    so you did downpipes and didn’t get your car tuned is what I’m gathering here


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    2005 B6 S4 4.2L 6MT

  3. #3
    Junior Member Two Rings
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    Quote Originally Posted by Gunnarrrrr View Post
    so you did downpipes and didn’t get your car tuned is what I’m gathering here


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    Basically, lol

  4. #4
    Veteran Member Three Rings Burkeomatic's Avatar
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    Well, most, if not all OTS tunes won't allow you to disable the secondary O2 sensors as the EPA has been cracking down on that. They don't want to be the next ones made an example of. I mean, you should still tune it, but you're always going to get that catalyst below efficiency code or whatever it is.

    Spacers can work..... allegedly.
    2014 A8L 4.0T - DS1 Stage 4/JHM TCU, FE Axlebreakers, E85

  5. #5
    Veteran Member Three Rings Botbasher's Avatar
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    Jul 26 2018
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    Quote Originally Posted by Burkeomatic View Post
    Spacers can work..... allegedly.
    In Mexico.

    Cheers,

    KS

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