I've treated my past motorcycles with Sea Foam but they were carborated. This is my first winter storage with a fuel injected bike. With the bikes with a carborater, I would add the treatment, then ride the bike around for 5 or 10 minutes or so. Is it necessary to do this with fuel injection or can I just add the treatment and let it idle to mix it?

 

I usually ride my bike to the nearest gas station and add it before filling up.

 

Yes, you can add it before going to the station, or add it at the station and ride it home, or run it for a few seconds after adding it at home. FI doesn't need to be run for 5 minutes to fully disperse the SeaFoam throughout the system like a carb does