rob73

when i pedal my wrx hard onto boost im hearing a noise which sounds like someone blowing a raspberry even though it still pulls hard with no misfires or splutters,ive changed & checked any nessacerry pipes & ic joiners and found nothing amiss,also if i slam my foot down hard from low rpm when it goes on boost it flicks up to around 1.3bar then settles to its usual 1.1bar but if i do this at high speed/rpm it doesnt go beyond the 1.1bar setting is this normal? & also any ideas on the noise please? Btw it a td05 turbo.