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replacing catalytic converters on a 2004 911 40th Anniversary

  • 2004
  • 911 40th Anniversary
Mileage: 
88 000
Other
Conroe, 
Texas

All

My left engine back converter is malfunctioning and rattling. Can you recommend what to replace both cats with? I had heard that Fab Speed had something but that it causes the check engine light to come on. Any suggestions on replacement device as well as a good shop to go to would be appreciated

 

Thanks

 

David

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