No, this isnt that bad
I too have a sub box in back..........have had it since the car was two months old. What Im experiencing is not normal for my car.........and if it IS normal for yours, Id have it checked out.
The car is pretty darn quick, except with this thing going on. Even with this issue, it seems once its done "hesitating", when it "catches up" it goes nicely. Its just that Ive noticed its taking longer now to "get up and go".
Honda's OwnerLink website even mentions something like this occurring during the changeover from cold to warm weather, before the gas stations change from winterized fuel to normal. And oddly enough, up in CT its around May.........so I may hang on for a little to see what happens.
As far as resetting the ECU, I was thinking about that as well. Did wonders once for my wife's 86 Legend
-Chris