T120 Injector Noise?

Noticed a continuous buzzing noise coming from the injectors yesterday upon turning on the ignition and prior to starting the bike. Sounds like an electric motor but its 'cycling' as though hunting for a stable condition, if you know what I mean. I hadn't heard this before (bike was new last August) so as I was just about to embark on a 150 ride to Yorkshire I phoned the dealer. Their service department assured me this was normal and is part of the fly-by-wire control system.
The trip there and back went ok so presumably nothing to worry about, but just checking in here to see if anyone else's new T120 makes this noise, and I've just been deaf to it until now.
Thanks

 

Not sure - There are clicks and buzzes from fuel pump when turning on the ignition, but these stop after a couple of seconds. This is a quiet but continuous motor noise and its definately coming from the injector block.