Somebody please correct me if I'm wrong, but if I believe correctly, BDE has the most HP gains in regards to full systems for the Busa. Again, don't quote me on that...I just swear I recall hearing that at one point. Anyone?
I beg to differ. According to Johnnycheese, he's reported that the Muzzy marginally gives the better hp gains. I don't use either one, so I personally wouldn't know. I personally think that the compression and other motor factors will ultimately determine how much TRUE hp each exhaust will ultimately put out. With all that being said, the same bike, on the same dyno, using each exhaust, under the same conditions will give you true data to make an educated assumption.