The auto tune is sort of working, it does throw up one or two issues. To get round them I just put a "0" in the AFR so it wouldn't change the settings. Then change the values man-drolicly.
1st day the bike was a pig loads of flat spots and stalled a lot. I could see the issue though and changed a few things and it was better. Then working out what was a good AFR at what revs and throttle position, trail and error.
Now it's possibly not as quick low down but much easier to ride in the slow corners, the snatchy harshness is going. Two of the corners on my way back home each day are tight slow 90 degrees, I use to have to pull the clutch in to get round. Now you can get round easily without the bike wanting to take off or stall/judder.
It's true though zx12's do like their fuel. Got a few more flat spots to sort out and get the tickover right. It can only get better if not just load an old map.