Cleaning the I/C picked up the gas mileage a bit, to the tune of 2 more mpg's
. It already had a K&N drop in when I bought it, which also helps out. These trucks were rated at 13/17 from the factory, which is about what I've been getting (or less depending on how heavy footed I get). I logged my mileage on the highway going to Gadsden last night, and got 19 mpg, with no A/C running, at 70 mph. Logged it tonight going back up to Atalla. I got 14+ mpg, A/C on, and mixed city/highway driving.
