now for a more serious reply...
your mate is an idiot.
leave it alone, no lightened pulleys, no fly wheels... buy a proper exhaust system, improved your cooling mods, get an aftermarket ecu OR even a Nistune (I can supply), get it tuned.. even with stock injectors, stock afm, stock coils and a new fuel pump with the fuel pressure relief valve removed and 1bar of boost you'll make about 190~210kW depending on motor health and dyno.
I'm sure you'll toast all your homo Honda mates.. even though it "doesn't rev quick".