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Single or dual exhaust?
I'm new here and just bought a 2005 f350 with the 6.0, and was wondering if dual exhaust would increase the mpg more than the single, and if so how much? Also was wondering if removing the cat would void the extended warranty? How much mpg can you expect putting on exhaust either dual or...- daren99
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- Forum: 6.0L PowerStroke Power & Performance
