2009 Impreza 330s not boosting

[velocity technology]

have you checked the boost solenoid?

[chrisbarter]

Is that the small solenoid on the top of the engine yeah? Pipes down to the turbo and wastegate actuator . . I unplugged that and it generated a fault code on the ecu so I plugged it in , cleared tje fault and it seemed to be fine.

After that I used my mates Autel diagnostic kit and it did find a couple of codes mine didn't one being B0201 I think which was a high speed CAN communication error?.

Seems to run ok but has a really nasty splutter and power is almost completely on and off but only noticeable at 5000 rpm in 6th gear so can't really keep going out and testing it lol :/ .

[chrisbarter]

When I tested it at lower speeds this is what it did. It appears to climb to full boost pretty quick then trail off in the last 2 or 3000 rpm before redline.

Not knowing the performance of the turbo its self I dont know how it should look!.