Celica st205 wrc motor cutting power and boost problem Options

[empite]

Hello,
im dealing a problem 7-8 days now first of all
The problem symptoms changes couple times
When i was hit boost with 2 and 3 gear the car did a cut like the speed limiter ... like motor died...(so hard cut) well changed to cutting like no fuel or something like that...and now it goes 5 rpma and starts lagging like rpm limiter...
What i did
1)changed fuel filter with bigger and new
2)changed spark plugs with new and i checked all spark coils everything okay
3) i checked from ecu to igniter and igniter to distributor never cutted power from there
4)i checked volts from fuel pump works at 8 and 9 volts and 5 amber..are these volts low?..expect this, when i turn the key to "on"before start engine the pump doesn't starts for Little like "vrouuuuum"and stop because im sure before months did it...
5) i haven't check the fuel pressure yet...
6)i changed the map with other and i checked it with polymeter it works...
7)the turbo gauge from cluster never goes to 0 it goes little bit down from zero when i turn key to "on"
i press all the way down the gas after 3000rpm and when it goes to 4 and half until 5 makes cuts like rev limiter but the boost in cluster is full...is there anything wrong with tvsv or the vsv? I have and video but i dont know how to share it

[Smaay]

sounds like boost cut, how much boost are you making.

9 volts is good for idle. the resistor is active at low load. at high load its bypassed and the the fuel pump gets 12V