The ecelctric S/C is bul*****, it is basiclly a hair drier motor that bolts on your intake. It is not strong enough to even get yur engine out of Vacume let alone develop any boost.

The tunner could be crap but be very careful, some of these "tuners" can hae enought adjustability to actualy do damage if you dont know what your doing.

The K&N intake will probibly only get you around 5-6hp. All the kit is, is a cheap luminum elbow and a K&N cone filter that replace the stock airbox but still use the stock plastic elbow.

So thts my take on the ebay stuff. Hope that helps a little