I see the same relationship between the Gryphon's AECON, my dashboard's info center readout and a manual calculation as you do Lars. AECON is always high and my dash is generally a bit lower than the REAL value. On pure highway driving now, I get about 15.5 mpg. This is a pretty big improvement over stock, which was 1-2 mpg lower.
Mattyp, is your tire size correct? If it is too low, it will record miles driven on your odometer lower also.
- 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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