Im having problems with my boost that its not constant. Between 5-7psi every gear. After a long highway drive ~8.5psi. The car did 155km, I repalced the tcv and it didnt help. No codes.
I found a topic about the check valve that after a while stops working well. I decided to check its location in the engine bay and noticed that the hose that conects to it a litlle loose, see attached video. Is that supposed to be like this?