I drove yesterday +- 20 min. on the highway, wouldn't work, problem still there.
The hoses of the MAP sensor and boostgauge are ok. I checked them yesterday.

Tomorrow i'm gonna change the MAP sensor, measure and maybe change the ACT sensor, and i think i'm gonna change the noisy fuelpump.

This morning i drove to my work and there's no problem, boost peak's at 0.9bar, no misfire, no shaking or cut back.
At 16:00h i drove back and there's the problem, when the turbo is coming on at 0.2 bar the engine shakes and is knocking back and it doesn't go any further than max 0.4 to 0.5 bar.

When it has the special syndrome, i'm gonna sell the car