Hi Jerry -
I can't answer ALL your questions, since I drive one of those "gassers" you like to put in their place, but I DO know that Ford's reflash of the 6.0L engine hurt it both in power and in economy. They did it to protect themselves from warranty claims. Bill's tunes can get back the performance and economy and he tends to be conservative, so it won't damage your truck.
- Jack
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2024 F150 Platinum SCrew 3.5L PowerBoost FX4, Peragon Tonneau Cover, LineX Bed, 35% Window Tint on All Sides and Rear, Full Nose Paint Protection Film, Husky Mud Guards, Lasfit Floor Liners, VIOFO Dash Cam
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