07 f150 4.6 mpg with gryphon

[Sburn]

Originally Posted by TA2Dsailor

A guy in my squadron is considering purchasing a Gryphon and wants to know what kind of increase in mpg to expect with it. His truck is bone stock. Whats the average increase? Right now hes getting 19.8 highway. Thaaaanks

Same engine & year here. Reg. cab long bed. Gryphon with canned tunes. Maybe 1 MPG better, if he can keep his foot out of it. The worst I've seen, driving it like I stole it, stop-and-go city driving is around 15. The best, highway w/ cruise control set, is around 19.5

YMMV, as they say....