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  1. #1 Re: p0420 
    donated to get this wow TorqueAutoMotiv's Avatar
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    Its mainly going to be the cat The rear o2 reads cat efficientcy
    so it can be rear o2 sensor or the cat it self

    98 gtp sedan forest green ,S1X intense cam,Intense pcm,Magnaflow exhaust, ubend delete,TEP trans 3.29's,3.4 smoothflow mps,Dyno'd 281hp and 371ft #'s of trq at the wheels
    http://www.cardomain.com/ride/3338681
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  2. #2 Re: p0420 
    GT Level Member chickenfried's Avatar
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    so is this ZZ Performance a descent replacement?
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