Sorry I can't understand half what you are saying or asking. The only thing I could semi get out of that, was that you can't build boost till 4k rpm.
1. What does it boost to afterwards?
2. Does your turbo have any shaft play, smokes, leaking oil, etc..?
3. Is your gauge accurate?
4. Make sure all your clamps are tightened (t-bolts are the best), and all the couplers are not torns.

There are ton of reasons why turbo doesn't boost.