with the k&n open filter....

http://www.electricsupercharger.com/

thank you all.

don't know - but it does not add nearly as much pressure as a turbo - so I would guess not much (or at least not worth the $ they are asking)

You could get a real supercharger second hand (off a 2l toyota or something) for less than that, and would give you much more power.

I'm not a beliver it's effectiveness.

 

Subaru already makes a forced induction system for your engine that is proven

its crap ive seen this same exact thing talked about on every auto forum i have been a member of, and every single board will tell a blow dryer on steroids is not a intake! or a way of forced induction. if you are really wanting more power get a turbo or do some tuning to your n/a motor dont waste your money on that crap