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  1. #1
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    Cobb O2 CEL Delete

    I'm about to take the AR catless downpipe leap and was wondering if the Cobb STG2 map deletes the O2 sensor CEL. I checked Cobb's website and did a search here but couldn't find the info. Thanks!

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    Yes.
    2011 E90 M3 \ Melbourne Rot Metallic

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  3. #3
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    CEL will be gone, codes will remain though.

  4. #4
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    I take it codes won't hurt performance so I'm happy with that. Thanks gents!

  5. #5
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    Sort version, with Cobb it disables the O2 cat monitor and no codes.

    Longer version, it doesn't trigger any codes or CELs because the monitoring component/software in the DME that otherwise checks catalytic converter efficiency is disabled and thus its unable to set codes and set off CELs.
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  6. #6
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    I should have just PM'd you Dzenno with the question but didn't want to be a bother. Once I install the AR downpipes I'll hit you up for an etune. Thanks!

  7. #7
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    Oh no bother at all, any time Click here to enlarge
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