thanks Bill
whats the break in period btw, if any??
i can tell the difference in power immiediatly, but one of the main reasons i got it was to try and get better mpg.
especially in Seattle there are alot of hills and stop and go's.
i was averaging 12.5 or so without the gryphon, what do you expect with it?
btw im pretty light on the throttle never really any jack rabbit starts
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2008 White Ford F-150 Lariat Supercrew 4x4 | PHP Gryphon w/ Custom Tunes | 18" XD Monster's | 33" BFG A/T | AS Leveling Kit | Brandmotion iPod Adapter | 6000k H.I.D Lights | Line-X Bedliner | Weathertech Floorliners| True Dual Magnaflow Exhaust| K&N Cold Air Intake| Troyer Performance UD Pulleys
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