First you got to know the difference, turbos work off of exhuast gas hence the need for a turbo header. Superchargers work off of drive belts like your air compressor or powersteering pump do. So, if you are running a belt to work the supercharger it will take a small amount of power to drive the charger before it gives you any power. This problem is not that bad on a large displacement engine such as a V8 that most where designed for, Jackson superchargers has a nice unit for the small Honda engine that works well but if your looking to make more than a 80hp increase I would look to a turbo. Other things you may want to address when installing a power adder is fuel supply. Most kits will include a hi pressure fuel pump and or a fuel management unit (FMU) to address fuel delivery. Hope I may have cleared up some things don't hesitate to contact me for more info.
Alex C
Preicison Machined Engines
boostit@pmei.net