I recently followed this thread with considerable interest, since I have a newly acquired 6th-gen (2002) RC46 VFR with what seems to be an identical issue! I'll be running the bike in 3rd or 4th gear (I'm a very 'born to be mild' rider) with the tach indicating between 5K and 5.5 or so, and maintaining a steady throttle position, when the power starts to fall off somewhat. To correct that, I have usually applied just a SLIGHT bit of throttle, at which point the bike surges annoyingly. I like to ride at a steady rate and 5K, so having this 'drop-off and surge' thing is a rather big frustration! I have no real indication as to when the bike had its last 'serious' service', but with 32,687 miles on the clock, it's probably time to take her in and have her get the recommended work done for 32K. HOWEVER, meanwhile this problem is really causing me a load of annoyance.
I noted the suggestions about possible fuel issue, as well as the caveat about checking/replacing the fuel filter and making sure the fuel pump is operating properly, so I'll definitely mention those suggested 'remedies' to my mechanic, but if that doesn't resolve things chop-chop, it's back to square one again! The bike has NO Power Commander, BTW and also has a stock exhaust system and fuel system. Since LAZYEYE's bike is 8th-gen (2014), it's interesting that BOTH my 6th-gen and his 8th-gen seem to have an idedntical affliction.
All of this simply makes me wish sincerely that I hadn't so rashly sold my 2000 5th-gen Viffer, which was a beautiful machine, stable throughout the power band in terms of providing smooth response, and never gave me a single issue. Amusingly, I'm sure a 'mild rider' that I haven't even encountered the EVIL VTEC spirit, yet...unless this issue is somehow connected to the extra complications of that system. [My machine is a California model (it even came with a small 'Saint AOC be our Protector!' medallion...yeah, li'dat!)] 😝