Yea it is worth it, for most of us gas milage isnt a priority anyways especially when trying to run 20+ psi daily lol. E85 is already in some areas of Southern California and some in the midwest, ive seen it before in Cali.
Theres guys running that stuff daily tuned to 30deg timing adv and 25+ psi on 16gs and 50trims... What a fun way to drive to work every day, sure would get there a whole lot quicker lol...j/p