exhaust from o2 back question

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  • metroya_performance
    Member
    • Mar 2010
    • 88

    #1

    exhaust from o2 back question

    is there any reason why I shouldnt just straight pipe my 325e from after the o2 sensor all the way back to a flowmaster? besides legality issues? almost all of my exhaust has rusted and is falling apart somewhere, and the only good area is the manifold downpipe and the section right before the cat with the sensor in it.
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