When I went to Bragg the traffic was light and no tolls. Before my K&Ns and the Upsolute chip I was getting 25 mpg on the interstate. After just over 27.... I have 8,700 miles on mine now. I did make a couple of pit stops (too much coffee ) and of course I did get back up to speed as quickly as I could. (wink) Do us a favor and keep us posted on whether or not you continue to get that awesome mileage.