Thanks for the posts, guys, and sorry for the embarassing typo (I realize it should be 4.7L...)
I have read a lot of reviews of people saying they get 1-2 mpg on the K&N, and 1-2 on the Flowmaster. My dad got around 1 out of his '01 Tundra TRD when he put the K&N CAI on it (he's also at 7000ft...
I installed a 1" leveling kit and 265's on my '06 2x4 V8. I'm getting about 16mpg (down from 18.5). I'm planning to install a K&N COI to help it breathe in, and I'm thinking Flowmaster to help it breathe out, but I don't want an obnoxious truck. I was thinking the 50 Series Delta Flow, but I...
I put the Daystar 1" lift on my '06 so I could clear 265's. It leveled perfectly, and with the larger tires, looks great! It definately needed an alignment, though. For anyone looking, Autoanything had my leveling kit for about $39. Not bad.