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  1. #1
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    S3 8P Exhaust system

    Hi all,

    Got my S3 a few weeks ago and looking to tweek a few bits and bobs,

    I was under the car the other day giving it a check over and i noticed after the first cat and second lambda sensor theres a small box (which im presuming is a second cat) but its also got a bypass witch i find odd?

    im getting a custom cat back made up and i was wondering if i can do away with this second cat? its after the lambda sensor so wouldn't cause any running issues but im not sure how much it would effect the emissions?

    Any help much appreciated

    Cheers

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  3. #2
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    anyone got any ideas on this?

  4. #3
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    Why not just replace the whole exhaust?
    Milltek,Supersprint,BluFlame,Fox,...
    You're gonna need it sooner or later

    If you want to repair the old one just buy new cats and go to the local garage and get it done!
    Black roof,Tinted windows,Solar Orange Calipers,KW V3 Coilovers,
    HEKO Wind Deflectors,CAI ITG Maxogen,Non Res Supersprint Exhaust CB with custom Fi76mm DP,
    RevD with GFB DV+,Autotech HPFP,Custom SKN map Stage2,Forge ShortShifter,THS mounts,
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    365HP and 500NM of torque!

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    only worths upgrading downpipe, or complete system, but not only the catback

 

 

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