I am running the canned level 3 tune and I am getting about 14 mpg around town and between 16 to 17 mpg on the highway. Keep in mind that since I have received my Gryphon I have had a really hard time keeping my foot out of the gas. My mpg's might increase if I could just learn to drive normal. Still waiting for my custom tunes to compare the mpg's between the two. It has been about 8 weeks since I received my Gryphon and I am getting kinda antsy. I am hoping to hear from Bill or Cory soon.
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2007 F150 XLT 5.4L: 3" SISO MAG: VOLANT CAI: GRYPHON TUNER
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