Well I watched the video and if I forget all the information about oxygen sensors and power commanders I'd say you've got a classic case of FZ1 ignition coil dying.
Looks exactly the same as mine was when No. 1 coil was on its way out.
Keep us updated these threads are useful for others...
Seems to be a common problem, running rough after a good soaking.
Mine runs rough (feels like it's running on 3 cylinders) for a while after a wash.
I fixed it with waterless wash, no dramas since.
Yep, that was me.
I'm not after performance, just wanted to fix the usual fuel injection issues (throttle cut and surging mostly.)
My bike is factory standard and will stay that way.
Restrictions gone, fuelling sorted, oxygen senson retired, I'm a happy camper.
This is the first time I've...