2006 Megacab 3500 6 speed. 12500 mi.
Traded in 2002 2500 6 speed had few mod. done to it. Also had 1999 auto. New truck is getting an average of 14 mpg with what feels like half the power. Truck feels like it does not get its power til 2400 rpm. Is all all of the new trucks like this? New...