definitely a lot of thoughts and time spent on my car..I experienced one time that my car also unable to boost more than 0.5, I thought was the turbo actuator,
but actually required some vacuum hose routing & snap on the "tulang ikan", after that able to boost beyond 0.5bar.
some mechanic say its the turbo, advise me to change.
but if its the turbo, why can I still boost to 1 bar when I remove the air flow.
if there's a need to change, I would change..
I just got conned too many times..
I came to know the wastegate is gone, either its fake or sold to me in bad condition as half cut..
anyway, I already inform the mechanic, going to do a replacement for me..
this is the 3rd wastegate..