Fourtitude.com - Is secondary CAT delete possible?
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    Fourtitude.com


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    1. Member
      Join Date
      Sep 14th, 2008
      Location
      Tacoma, WA
      Posts
      642
      Cars
      '09 Jetta 2.5
      04-20-2017 09:08 PM #1
      I wonder if we can remove/cut out that second cat without a CEL. The O2 sensor is right in front of it and none behind it. So it shouldn't be able to see the second cat missing. Sounds like a easy few horses.

      I know Porsches ,Maseratis and others have secondary cats and there are exhaust bypass kit for them to get rid of it without a CEL.


      Sent from my iPhone using Tapatalk

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    3. Today 11:47 AM #2
      Quote Originally Posted by vr6-kamil View Post
      I wonder if we can remove/cut out that second cat without a CEL. The O2 sensor is right in front of it and none behind it. So it shouldn't be able to see the second cat missing. Sounds like a easy few horses.

      I know Porsches ,Maseratis and others have secondary cats and there are exhaust bypass kit for them to get rid of it without a CEL.


      Sent from my iPhone using Tapatalk
      You should be able to do it without a CEL, not sure about the extra HP though

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