SCT 93 octane ZED0 tune from FocusSport & K&N Drop-in. Last 1800 miles since tune ave. 34 MPG. Mostly commuting to and from work. Shifting at 2000 to 2500 and only thrashing really deserving people.... although it seems like I need to spank at least a couple per tank.
Long distance highway would probably be a bit better without all the cold-starts on my daily drive.
Oh, keeping the tires 35/32 and the alignment toed out as far as possible. I think the stock settings are too conservative and cost mileage.