[aerohead]

Without a BSFC map for your engine,it'd a shot in the dark as to the effect the gearing might affect.Your engine has a "sweet-spot" and Honda should have selected a gear set which took advantage of the particular merits of your engines behavior.You might succeed in wearing your clutch out prematurely.You might gain,although around town you already should have a good selection of gears and control of your speed to optimize efficiency.--------------- Had you lowered your road load,either by reducing rolling resistance or aero drag,you probably could use taller gearing ( a 6th-gear would be best here ),otherwise you suffer acceleration,hill-climbing,and lugging perhaps.It's a very hard call.