Considering that most vortechs dyno at 360-400 with exhaust and test pipes and this guy only dyno 333 with the plenum I would question those numbers. My best dyno with the vortech was 380whp with test pipes and exhaust. He should be getting that 388 with just the vortech, test pipes, exhaust, and v4 plenum.....333 is awefully low IMO.

EXACTLY! And the NA gains are no better than any other plenum mod presently available according to the vendors posts.

Well we have some initial butt-dyno impressions on an untuned car

https://g35driver.com/forums/g35-coupe-v35-2003-07/54692-new-kinetix-manifold-installed-pics.html