Boost control solenoid fault
Did you get this problem sorted?
I have had the same issue but it has happened at times then gone away again but its now back agaion andI want to get it fixed for good.
The loss of power is always under 3000 not like when the egr needs cleaned which usually gives power loss at higher revs.
I think it is the boost control solenoid but before I buy a replacement I thought I would ask if you ever got it sorted.
I know you said you were having it cleaned but I wasnt really sure how this could be done as the part is sealed in its plastic casing so any help with that would be good