Ive been looking into FI for my 6.0 06 SilveradoSS, and so far i like what i see. My only problem is i drive 30 miles one way to work and ive been wondering, how much a blower will drop my fuel mileage? Im looking into magnacharger specificly, but id like to hear from all blower and turbo guys just how much mpg was lost with your set-up, and what other mods do you have i.e. bigger injectors, headers? Also, is there a kit out there that will give good power without sacrificing too much mpg?