On 1/27/2014 7:23 PM, BAR wrote:
In article , says...
I had dual exhaust and a K&N filter installed on my F-250 with promises
of significantly higher fuel mileage. Truck sounds good but I haven't
noticed any improved mpg. In fact in the winter it goes down.
Did you notice more giddy-up-and-go?
My 5.4L in my F-150 gets 15 in the city during the summer and 13 in the city during the
winter when consuming oxygenated gas. The problem is that I burn the same amout of gas to go
the same distance with the added benefit of spewing MTBE type chemicals in the winter.
If there's more "giddy up" I really don't notice it. My F-250 has the
same engine as your F-150 but they have different transmissions and the
F-250 weighs a bit more. I've noticed that my son's F-150 with the 5.4L
always seemed to have more "giddy-up" than my truck. I think the big
difference is the transmission.