I have a 2009 Kawasaki Concours 1400 when I try to accelerate, I get around 3500-4000 rpms and it just falls on its face, if I give it full throttle it just lopes between 2500-3500 rpms. I run 91-93 octane, just put new plugs in it and cleaned the fuel injectors by hand and it still does this. The air filter is good and the fuel filter is new. This started after a 1800 mile trip. It is unrideable. Any suggestions? Thanks guys. I'm about fed up with this, many hours doing all this work and still nothing to show for it.