^^^what he said

if you have the fuel system already not a bad way to save money since you're using premium the cost would work out, a lil saving on e85 with a lil less mpg for more expensive prem and better gas mpg. only thing you have to watch is most stations switch to a lower e80 or something in the winter and that wont work if you're not tuned for it, like putting 87 on a 93 tune. it'll run fine, but boosting it could go boom.