Ok the initial post was crap. Wrote that while i just woke up. lol
The question is, looking at the boost meter, a stock gts-t should be able to reach 5bar with no problems right?
If it's only stuck at 4bar all the time no matter if you rev til redline, what could be the problem?
I checked all my lines and they are intact with no leaks. Could the actuator f**k the boost?