I know running straight E85 is not a good idea unless your tuned for it, and really won't give any benefits unless its forced induction or very high compression and is tuned correctly for the fuel difference needed

i was wondering if mixing it would do anything though. the gas station near my place has E85 for $2.79 a gallon, where 85 is 3.77 a gallon (the ninja 250 manual says to run regular, not premium). i don't think i'll be saving alot of money, but would running 20%-30% ethanol as opposed to the standard 10% that is in regular maybe give me some sort of benifit? its a carbed bike if that matters.

anyone experienced with actual results of this?