h22a more hp to begin with and a better potential
h23a less 40 hp to start with and depending on how much boost you wanna run say about 6-9 lbs on a greddy or fmax kit for daily driving then that h23a would proly gain about 50-65 hp
or back where the h22a started while the h22a would be around 250-265 hp with the same mods
you get the idea
h22a :thumbup: > h23a (also :thumbup: cause it's a honda engine)
just my 2 cents