i was running the 053 pipe w/o the power adaptor & w/ the power adaptor, and i think the bottom was good enough even w/o it. however, when i put on my 086 pipe w/ power adaptor, i got the top end i was looking for... but now when i hit the triple, i had to hit right on or i'd short it by a scooch. i've heard some good things from the jammin' pipe, i'm gonna give that a try next.
btw, this was @ revelation, which is kind of a small track, but has one long triple. for kz, i think the 086 w/ waller would be a good choice.
i do like my p-5 (it's my 1st novarossi, the rest are rb's), but i think my ws72 has a little more @ the top. i haven't gotten a chance to test, maybe next week.