The fuel pressure goes down. And the car dosen't get so much fuel like it should?

I have changed the fuel pressure regulator and the prussure on idle is like it should be.

I also changed the pump for 1 month ago. And after I changed it, the problem took longer time before it came ( Like 20 minuts ). But now it like before I changed it and it only takes 5-10 minutes befor it comes up.

I have changed the sparkplugs, tested other coilpacks, searching for boost leaks, and much more. But I can't find out the problem. :(

No, at the same time I give full throttle it only goes more and more down all the way down to 29 psi. On idle the car should have 36 psi. And it have, but that tells you how much it's going down. Normaly it will go between 36 psi and 50psi when I full throttle.