Ford Focus Forum, Ford Focus ST Forum - View Single Post - Basic Bolt Ons: Cat back exhaust systems
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Old 03-21-2009, 11:35 AM   #7
SD_Focus
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Join Date: Aug 2004
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What I Drive: 2001 BMW Z3 Roadster 3.0

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I thought we had agreed that 2.5" is best for any duratec (at least 2.3) even with only minor mods.
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