agreed the FX4s have the 3.73 possy and i don't know what i'm doing wrong. but i can't get that milage out of my truck................
most screw fx4s have 3.73 limited slip, scabs usually have 3.55 limited slip, but some come with a 3.73ls. take a peek at the door sticker and google the axle code, then youll find out ha ha. good lookin truck, if its a 5.4 enjoy that freeway mileage ha ha, you wont see that around town. My inlaws live in orem ut and we drove my screw with 3.73 ls and 34 inch tires from seattle to orem. I got between 19 and 21 on the flats and 16-17 on the inclines over the passes. I had an edge evo though. I highly recommend it for mileage on long drives.
