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Audi allroad 2.7t cat delete

  #1  
Old 05-24-2011, 08:22 PM
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Join Date: Feb 2011
Posts: 3
Default Audi allroad 2.7t cat delete

Hello, my name is Will. I recently bought a 2001 allroad tiptronic. Absolutely love the car, but recently I have taken on gutting my downpipes. A little time consuming but not too bad. Anyway getting to my question, can anyone point me to a good main cat delete/straight pipe DIY? Not doing it for hp gains or anything silly like that, but they are clogged and it's either replace them or delete them. And I choose to delete them. I guess you could say I'm slowly going about building my own custom exhaust. I have access to a shop full of all the tools I would possibly ever need so that won't be an obstacle. I'm sure this question has been posted time and time again. I've searched quite a bit (google, this forum) but I can only find obscure references to it, bits and pieces here and there, but no actual detailed write up about doing it on a 2.7t car. If you've taken on this project before, feel free to pm me or whatever with any helpful advice, tips, or tricks. Thank you in advance.
 
  #2  
Old 06-30-2011, 07:04 AM
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Join Date: Jun 2011
Location: South Carolina
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Did you get any codes with cats made free flowing?
 
  #3  
Old 06-30-2011, 08:35 AM
ImTheDevil's Avatar
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Join Date: Jul 2006
Location: Binghamton, NY
Posts: 11,670
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You will. You need to code out the secondary O2s in the ECU or use anti-foulers to avoid the CEL.
 
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