2004 cat converter. | Ford Thunderbird club group 1955-2005 T-Bird models

2004 cat converter.

  • Thread starter Thread starter Ggreen
  • Start date Start date
Ggreen
Reaction score
5
Thunderbird Year
2004
Has anybody changed the cat converter To a larger flow one. If so do you realize an increase in hp?, and how much. Trying to squeeze every inch of HP out of her!

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