would an exhaust improve gas mileage?
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This is a discussion on would an exhaust improve gas mileage? within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; would an exhaust improve gas mileage? i would think so because it frees up more power from the engine? what ...

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    would an exhaust improve gas mileage?

    would an exhaust improve gas mileage? i would think so because it frees up more power from the engine? what do you guys know about this?

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    2006 WRX TR: TurboXS RFL-Ti TBE, GR+ Pro Coilovers and all supporting suspension mods, Stage 3 block with CP pistons, 18g, P&L FMIC, deatschwerk 750cc injectors, PPG gears

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