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  1. G

    MPG Gain's

    exhaust
  2. G

    RPMs

    Got a 05 3500 6sp manual. I keep rpm s low, around 1000 while shifting to conserve fuel. Will I hurt the engine by so called bogging it down.
  3. G

    MPG Gain's

    How loud is it? Is it loud in the cab? Thinking of doing the same thing.

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