You should see a gain in changing the ficm program.
As for your PCM, I dont know what bill is rolling ex's back to. I had the same program as you in mine, but i changed to a truck PCM and had it rolled back to VXBC6. Which is the file Bill has in his race truck. IIRC.
Ex's tend to get worse mpg than a truck does, simply because of the weight of the vehicle vs the truck. They are actually quite heavy.
You will have to call in to order the tunes for your sct, most tunes here are used on an edge converted to a gryphon. Although the tunes would be the same.
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19 F-350 6.7 Auto
16 F-350 6.7 Auto
05 Excursion 6.0, Auto, PHP Atlas 40 FICM, ARP Studs VXBC6(truck PCM)
00 F-350 7.3, 12 Speed, PHP Gryphon, PHP hydra, DAC3
95 F-Superduty 7.3 DI, Auto, Mechanics Truck
94 F-Superduty 7.3 DI, 5 speed, Flatbed
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