I have heard mixed emotins about those chips some people say they work and are awesome and some say they suck. What they are supposed to do is just reset your rev limiter and adjust your air to fuel ratio, but just because they got 20hp out of one Civic does not mean another one will do the same. The only other things you could do are throttle body, intake manifold, and maybe do some fuel management like fuel rail, bigger injectors, fuel pump. If you get one of those chips you may want to do your valve train i.e. dual valve springs and titanium retainers.