ok, more symptoms

the boost will creep in 5th gear as you pile the revs on. with the boost controller OFF it notmaly boosts to 6psi, but was about 8-9psi as 5krpm so deffo creeping. possibly worn actuator?

also on part throttle the turbo will be spinning up (can hear it hissing) but no boost getting to the engine (map). iw ehen cruising on mototrway. when it does this it will make the engine management light come on. if you apply a tiny bit more throttle it will eventually shoot from making no boost to full boost, theres no inbetween.

i'm thinking possbily leaking dumpvalve? (std recirc)? presumably a normal everyday boostleak wouldnt fix itself when you apply a bit more throttle?

there's a definite whistle noise there now that wasnt before tho