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  1. jacob__9

    How much HP gained with new air filter + exhaust?

    thats where some of the extra 40hp came from.
  2. jacob__9

    05 exhaust systems

    i thinks that 68Shelby350 works for magnaflow. maybe he can post some pics. :nice:
  3. jacob__9

    How much better is the three valve over the two?

    it depends on if we are losing 40lbs of torque to get 40hp.