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    VWVortex


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    Thread: test pipe/holow cat.

    1. Member
      Join Date
      May 8th, 2010
      Location
      oly water
      Posts
      1,861
      Vehicles
      03/vw/gli
      06-02-2012 07:17 AM #1
      anyone ever do this..the county i live in doesn't do emissions.my cat is having my car throw codes...anyone do the hollowing of the cat or run a custom test pipe?

    2. Member vien's Avatar
      Join Date
      Jan 14th, 2012
      Location
      orlando fl
      Posts
      286
      Vehicles
      03 jetta gli 24v vr6
      06-02-2012 12:04 PM #2
      i have a custom test pipe and catback piping is 2.5 inches huge difference, but you will have to get a o2 spacer so you dont get any cel or get flashed and have them delete the rear o2

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