What kind of MPG are you guys with the 4.6 and 4x4 averaging? I've been averaging around 13.3 mpg with 50/50 driving. I went up to 285/70r17's but I dont think that would have made that much of a difference.

whats everyone else getting?

 

98, 4.6L, Std Cab, Long Bed, 4x4 Off Road, True Dual straightpipes, 315/75R16
14.3 MPG
When I had my 285's it was closer to 15

 

what kind of driving is that?

 

About 60% in overdrive, the rest of the time about medium acceleration

 

Well, mine is only a 2wd, but right after I got the duals I was only gettin around 13, then I tried to drive really good for one tank, got 14.5, and just yesterday I got 15.5, and that was on 2 burnouts, accelerator about 1/3 to 1/2 way down evey take off, and going an average of around 65 mph.

 

98 4X4 4.6 SINGLE 3 " PIPE ALL THE WAY OUT WITH A FLO-FRO V-FORCE MUFFLER, DUALS KILLS GAS AND HP I GET 18 MILES PER GALLON AND I HOT ROD IT AROUND. MY EXHAUST SOUNDS JUST LIKE DUALS,, V-FORCE IS PROVEN TO BE BETTER THAN FLOW MASTER, MORE TORQUE AND HP BY FAR.. DO YOUR RESEARCH GUYS. I DID.