Hi, I have a brand new '06 PreRunner SR5 with the 4cyl. and 5 spd regular cab. I'm only getting 20 mpg with ALL highway driving. I literally have one stop sign and one red light during my 40 mile drive to work. Is anyone else getting as bad gas mileage or is it just me? I also wanted to ask if anyone knows about the "vornado" and/or those piggyback ECU things that are cheap but supposedly add hp AND add mpg? Would a K&N help it breathe better enough to improve the mpg?
Question 2, I've got an odd shimmy that feels like the truck is coming off the chassis sometimes depending where I'm at on the freeway and only at freeway speeds. Could that be due to the factory lift and/or the stock tires combined with the short wheelbase of a regular cab?