[naz]

try it out and let us know how your fuel economy changes.

track your fuel consumption over the same route over a 1 month period (take a measurement daily)

get an intake, exhaust whatever mods you think help, drive that same route for another month

let us know if it helps your fuel use

i think you'll find the difference is so small it won't be statistically significant. what would be significant is changing your driving habits all together.. drive slower, don't drive.. you get the idea