Cleaning the sensor in the IAC, maybe. There is a sensor behind the air cleaner. Turn bike on and off a few times whille spraying in it.
Maybe someone with better FI experience knows. I did this for stalling issues. it did go nuts and rev really high a couple times. I don't know if I would even notice 1300, but I suppose it is good to investigate before it becomes a real problem.
I used brake cleaner, but they make sensor cleaner. I'll probably get some of that next time. Some say you can damage it with certain chemicals.
I am on my 4th injected bike, I believe they have all done it at one time or another. The last one, a 2009 FLHTC was the worst, it would do it at the second stop light from my house every time, did not matter what the ambient temp. was or how long I warmed it up. After about 10 seconds of 2000 RPM it would settle down and be fine the rest of the ride.
I am interested to see what the brains come up with, the one I have now will probably do it before long.
Brains aren't necessary. The engine does what the computer tells it to do. At that moment, through real or false inputs the computer saw fit to increase the idle speed. Haven't you ever had a glitch on your home computer? The one on the bike is even less accurate than the one in your phone.
It would be FREE to disconnect the engine temperature sensor connector, spray some cleaner in it and reconnect. Some won't reassemble without adding some dielectric grease. If the problem stops, good deal, if it continues enjoy it until a code stores. Others have had idle jump to around 2500 and that is hard to handle, yours is almost in the normal range so living with it until a code shows up shouldn't be that hard.