I ran e85 for a bit using the stoich option to change it. You need tiny tuner to make all the changes required. Changing cylinder gain, or IFR, you only need to change that one table.
cause it was really hard to make some more changes
06 GXP | 222/227 cam/cartuning turbo kit on 8psi/meth/e85 coilovers/ still on stock trans at 130k