2003 volvo isx15 cm570 issues

[Magnat1976]

Hello,been a while...
Not for good..old 2003 truck is still acting
Rawze,hope on you..
I'll give some updates.
Replaced Ecm...oem-volvo side parameters been transferred from old Ecm,cummins from site..
Truck ran excellent for 1 day,until next day-back to comma.
Guy who did programing assured that did it correctly..who knows?
Is it Chicago only,no more real mechanics-techicians?or nationwide ?
Truck is struggling with power,acceleration, performance, handling, braking..weird?
Engine and braking,handling performance, but I am experiencing that.
Later,I found weird noise..coming from the front of Engine..intermittent at 1200 rpm.front gears have a lot of freeplay..while we did adjustment of this..we found that camshaft timing was off..
On my engine is 4 and 6..
Wedge 4 for injector cam,fit correctly, valve cam...wedge 6,was very loose...so the valve cam..angle was incorrect set at cummins stealership..while they overhaul..300k miles ago...
Is it harmed the engine permanently?
Few mechanics said,that it shouldn't be..
I dont want to give up on my truck and still trying to get it back alive..
2003 truck not much electronics,modules..only 2 engine ecm,and abs ecm..no even vecu..but something is acting...intermittent, but mostly all the time

Guy who did programing...advised..to disable Abs,I pulled abs maxi fuse out.sometimes it helps.....
I gave a try replaced 2 front abs modulators...truck been alive for 2 days,then back to comma..replaced 2 rear ones with relay valve -no changes..
I have chinese inline, when I hook it up...I see weird thing..when I m9nitor readings
Current values,it reads ok..but after 10 minutes,min-max digits showing crazy...
In example oil pressure min..0,max 490psi
And all parameters like that..wondering...is it Chinese adapter,or Ecm..getting signals like that and going crazy..?
Also found option...engine state monitor...
While accelerate, or press throttle quickly...it shows message-fuel limiting because lack of boost pressure. To prevent black smoke..check air Intake system...and feel that engine is acting at that time..
And air intake system is operational..no leaks,holds pressure, turbo makes 27 psi..if it's mechanical, it shouldn't be Intermittent?
Turbo,injector won't be ..1 day spinning, spraying..1 day they aren't?

On new Ecm-i got 500hp,1650 torque,but intermittently truck gets back to normal, but most of the time is like 200 hp..with no power.
Wiring ,j1708,1939 causing all this mess?with no warnings, fault codes
Rawze,hopefully you are going to read this and respond..also I remember you mentioned Ct...I can get this software..but don't know,how to use it