Its just a aftermarket intake manifold.
Its a step up from the RBC, but in terms of gains Im not to sure how it compares.
It will have smoother edges, made from more heat resistant materilas and will generally improve air flow through induction.
Couple this with a larger aftermarket throttle body and you will be in the higher realms of NA engine tunning. IMO, if you're still running the OEM cams and staying NA you will only get a few extra horses (5/8bhp) and when you consider how much you will have to spend on the inlet manifold, throttle body and new map, I'd say its not worth it.
I considered it when I was tunning my EP3, but I was looking at the RBC.
