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6.4 exhaust tunes

  1. 6.4 exhaust/ tunes

    6.4L Performance Parts Discussion
    i am looking at purchasing a 2008 super duty and i have a couple questions. i know these trucks have less than desirable gas mileage stock, but what kind of fuel mileage can i expect if for example i do a dpf delete and a spartan tuner and a AFE stage 2 intake? also, i found an online package...