My MPG went up after exhaust/HFC/CAI plus ecutek tune. If I stick the cruise control on 65 and drive for a few hours the dash computer tells me I get about 29-30 mpg. Before the breather mods and tune, the best I could do was about 27 mpg on a cross country trip.
That said, you will be flooring it to hear and enjoy your car. You'll also be downshifting more often to stay out of the 2000 rpm range, unless you enjoy rattling the entire car with a loud drone.
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Fast Intentions 18 inch resonated catback, Fast Intentions resonated HFCs, Stillen Gen 3 CAI, EcuTEK tune, 311whp
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