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my vents click too, not sure what it is, but my aircon blows cold air.. Maybe you just need to get it regassed

what does the dash boost gauge measure?

Just took it to turbotech, its boosting at 8-9 PSI so its obviously not a problem with the turbo, maybe it just needs a good service and tune-up

Air intake is alot louder than before edit: just re-read my OP, yeh that didnt make sense, i was meant to write it was alot louder not that it was not as loud, heh

is the turbo hard to get to to check for broken fins ?

Just took it for a spin then, seemed a little better than before - sounds like there might be a hole in the exhaust somewhere. Hopefully it just needs a good tune up, any recommendations in Perth for that?

Hey guys, Just bought a r33 not long ago, the past week Id noticed acceleration was a little jittery - not as smooth as it first was, and yesterday it seemed like all power that normally comes when the turbo boosts is missing. The best way to describe the sound its making is as if the airbox is sucking alot of air (its quite loud, not as loud as it normally was). The boost guage built into the dash under the RPM tacho still moves when accelerating etc. Any ideas what this could be? Everything is stock as far as im aware, stock turbo, stock boost the only thing that is changed is a k&n panel filter in the stock airbox.