Well, it looks like I'm going to have to jump in here. To be honest, 23rwhp for the entire Professional Products intake setup at 6,300rpms is probably possible. Why do I say that ? Because once these cars go past 5,200rpms, they start to dip in power for 2 reasons.
1. Cam specifications
2. Intake air flow capabilities
It is a known fact that guys are seeing 10-12rwhp gains with just a throttle body and plenum combo at 6,000 rpms. Combine this with an aluminum lower intake that can actually outflow the stock piece, then yeah, a full aluminum lower intake combined with a upper elbow and throttle body combination very well could yield 23rwhp. Not only that, but since this was on the dyno, the may have forgotten to correct the air/fuel ratio, and since it was a little lean, the numbers might be spiked a bit as a result.
With that having been said, I will NOT be purchasing anything by Professional Products. They are a Chinese based cmpany with an American label, and not only are they owned by a Chinese based company, their parts are all made in China as well. As I said in another thread regarding the Professional Products parts, if I wanted Chinese, I would order some General Tso's chicken, and be done with it.
One more thing. I don't know how many of you have seen this yet, so I'll post the link.......
http://www.hiperformancesolutions.com/
I'm hoping this intake will not fail to please, and that it will produce the numbers we are looking for. Not only that, but it is all made in USA. The dyno results on that page are for the upper elbow only, and not the lower intake manifold. They've been working on this intake for quite some time, and the next pieces will be production pieces. I'm planning on doing a before/after dyno comparison, so let's keep our fingers crossed.