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o2 sensors/Bad gas milleage

Discussion in 'General Discussions' started by Chewy676, Feb 9, 2016.

  1. Chewy676

    Chewy676 Junior Member

    Posts:
    17
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    Joined:
    Sep 4, 2015
    Location:
    Hereford, Tx
    Ram Year:
    2005
    Engine:
    5.7 hemi
    Okay so i had a magnaflow exhaust but it wasn't loud enough for my liking.. So i cut off the pipes all the way back to the cats and gutted them out, Sounds alot louder now, But ive noticed now im getting very low gas mileage even with mileage xs tune from my cortex tuner. Also i have 2 engine light codes which are the o2 sensors & a running lean code. What could i do to fix this ? o2 simulators or would it be better to just buy new cats and weld everything back together? Because my mileage is really low now :3681700201_eef6d1e2
     
  2. blackbeautyhemi

    blackbeautyhemi Senior Member

    Age:
    31
    Posts:
    1,962
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    917
    Joined:
    May 19, 2013
    Location:
    Lewistown, PA
    Ram Year:
    2015
    Engine:
    5.7 HEMI
    I'd personally do the magnaflow performance cats. They keep the sensors happy and sound/perform better than stock ones.
     

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