Though I see this post is from the a while back I figure if you have not gotten one yet you might find this helpful or anyone else for that matter.
I got this from the mad doctor "Bill"
Gryphon HP/TQ at rear wheels
These are the average gains we see on the F150...
4.6L
87 Octane - 18 HP & 30 Ft./Lbs.
93 Octane - 25 HP & 40 Ft./Lbs.
5.4L
87 Octane - 25 HP & 35 Ft./Lbs.
93 Octane - 35 HP & 45 Ft./Lbs.
Addition of a CAI or the "snorkel" mod will generally see a gain in the area of 5-8 HP.
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 [SIGPIC]2004 Lariat Super Cab
5.4L 3V
Tow Package, Prodigy Brake Controler.
Gryphon Custom 92 Tow & Custom 87 Perf, Magnaflow SI/DO, Air Raid CAI
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