I understand that, but look at the boost curve from 0 to 9 PSI.....
That is my point, regardless of fuel, power, boost level, driver name, and build date. Same intakes that we are conversing about.
I just wanted to show you how much better a longer runner intake works with a turbo, especially a larg(er) turbo.
If you want to nit pick....well my view of your comparisons.... Check out that silly (bad) TQ curve:
From 4 to 6K RPM....it loses 170 ft lbs.
So, I think a PI intake and cams is a better choice than stock cams and a short runner. This is going to hold true on any modular turbo combo, for street/strip use, is you want a good performing mid range.
That is true, but at the same time he has stock heads and a 62 MM compressor that is most likely the biggest reason for it falling off at high rpms.
When I had stock Cams and heads and a eddy manifold with a vortech my car was still making more power at 6500 rpms for example but that was still very much in the compressors efficiency range as it peaked around 14-15 psi.
What im hoping is that the manifold, bigger turbo, and ported heads will carry the power to 6k or more.
Also, I think your looking at it wrong, yes, the torque fell big time from 4-6k, but its also making 520 ft lb at 4k.....yes, it may have dipped down below 400 by 6k but lets take a look at my dyno with similar power.
On my 9 psi dyno with 470 rwhp peak:
Im making all of 370 ft lb of tq at 4k and eventually peak at only 435 tq, falling back to around 370 by 6k as well.
So let me put it this way, would you rather have your power peake at 435 tq and hit 370 tq by 6k, or would you rather have your tq peake at 520 and fall back to 370 tq at 6k?
You see my point?
Im making no more tq than that car at 6k yet he has 100 tq advantage on me in the mid range.