Thread: flowmaster super 40... FE impact?
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Old 01-14-2009, 12:58 PM   #15 (permalink)
Frank Lee
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Quote:
Originally Posted by PaleMelanesian View Post
Well, if you start with the assumption that they do improve mileage...
That has been researched, looked at, hashed over, re-hashed over, re-re-hash-hashed over, not to mention done to death, and it just plain doesn't work that way.

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