I'll agree with Antiramie, The sound is awesome and there is a power increase. As to the exacts, my guess is as good as any. According to Weapon-R HP gain is suppose to be around 8hp. We all know that for the most part though that this type of a gain is almost impossible from an intake. 3hp However, is more like it.
-Nate
http://members.home.net/nate.is
