Bmw e39 m54b25 re85 tuning?

[Juhnukka]

Hello im very new to this tuning software but i would like to learn the magic behind this

i have this bmw and i would like to convert it to run with re85 because in finland 98 octane costs about 1.6 euro per liter and re85 costs 0.80 euro per liter

can someone give me some advice or help with this or if somebody happens to have maps ready it would be nice or knowing how to do it

just today got my galletto 1260 cable and software

help needed

[Juhnukka]

If someone could even make those maps i might pay some Cash for reward