Stock fuel system but i don't usually leave the e85 in the bike for long after a trackday or race weekend. I switch it back to pump then run the fuel through the bike just for piece of mind as the bike sits for weeks sometime without any use.I might have missed it, but stock fuel system. I can get E85 locally and might consider trying it. How much fuel did you add? Did you change injector balance?
I've left all the maps exactly the same as my 95RON tune except for adding about 35% more fuel. E85 measures out to be actually about E75 here in thailand so if you're getting real good e85 you would need more fuel.