midpipes

Discussion in '2005 - 2012 (S-197) Mustang' started by smpd357sig, May 23, 2006.

  1. smpd357sig New Member

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    Will there be a big difference in loudness between, lets say mac prochambers with or without the cats. Significant difference?
  2. bigcat start with the upper hole, and if more traction is

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    i dont know for sure about the prochamber, but with an X/H it gets much louder without cats.

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