No harm done, if you upshift with throttle closed, I downshift all the time to brake on the engine, but i try to find the sweetspot for upshifting, and mine shifts quiet round 2500/3000 rpm's
Spyder f3s (tuned for bit more torque, in the low revs) I love to ride/ cruise round 70/80 km's per hour, and after tuning, I run at 2200 rpm, and not lugging the machine, have to say tho, I use premium gas, and overhere ( the Netherlands)premium isreadily available,and of consistent quality, and no ethanol derivates in it.
But
that's only valid for the 1330 3cyl motored Spyders Piratezz; the OP here, Motogordo, has a 998 V-Twin that's a high revving motor with a centrifugal clutch between it & the 5 speed gearbox, and shifting
IT at anything less than about 3500 rpm
WILL harm the centrifugal clutch - unlike the oil/hydraulic clutches on the SE6's that back the 1330's, the SE5's on the V-Twins
NEED to be spinning at least that fast for the clutch to fully engage!! :lecturef_smilie:
So as other's have said Gordo, it
shouldn't harm anything if you back off the throttle a little when changing, given that
Minimum 3500 rpm proviso for full clutch engagement that I just mentioned!

However, the onboard computer looks after all that 'rev matching' stuff anyway, albeit not
quite so well for the 'wired throttle' pre-2013 versions, so you trying to do it too is really just a bit redundant!

Still, it's ultimately a matter of finding what
YOU are comfortable with - and of course remembering that you
need your revs to be
above 3500 rpm when the gear change completes & you apply throttle once more, or you
will be harming/wearing the centrifugal clutch in ways you really don't want to -
especially now that BRP isn't supporting us with some spares for the V-Twins!?! :shocked: