yeah your right Leighton its .5
thing is you say you pulled the actuator pipe off and it still only hit .3 boost which rules your actuator out the equasion unless the wastegate penny was flapping open and maybe the actuator arm had come off the peg (rotten e clip)
that kind of narrows it down to turbo not spooling as it should assuming theres no big cracks around the wastegate penny!
so if I were you I would get it checked out if your not sure on the impellor being too tight
thing is you say you pulled the actuator pipe off and it still only hit .3 boost which rules your actuator out the equasion unless the wastegate penny was flapping open and maybe the actuator arm had come off the peg (rotten e clip)
that kind of narrows it down to turbo not spooling as it should assuming theres no big cracks around the wastegate penny!
so if I were you I would get it checked out if your not sure on the impellor being too tight