Sounds exactly like the symptoms you get with a crap DV with a spring that's far too weak.
If it still has the standard re-circ, you could have a split or broken boost pipe somewhere. Normal culprit are the two that cross over the top of the turbo.
Also if it has a boost gauge and you say the needle isn't going up, I'd start by checking the feed for that.
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2001 Bugeye - Project Black/Red, 1997 JDM Type R, 1995 V1 WRX, Defender Tithonus MOD Styleeee!
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