ok im new here so here goes, hope im in the right thread..

long story short... bought the eb turbo'd, blew it, pulled it off for 6 mths, done a manual conversion, everything drove sweet, brought new t4 high flow turbo put her back together, replaced and wrapped manifold ect (spent hrs perfecting all details putting everything back on) take it for a drive and we bump into my issue!....
drives fine untill you boost it up at about 4000rpm it does nothing looses boost, looses power, forces gear change sometimes it even dies at like 2.500 3000 rpm but then will rev to about 4.500rmp in next gear and hit next gear again and at 3000 rpm it dies again if i slowly accelerate it revs 2 5.500 but feels like it has no power coz im only half accelerating?
i have cleaned out and checked bov, wastegate,pod filter, connections etc everything seems normal?
just cant understand y its doing this to me now? have i done something wrong? BASICALLY I CAN'T ACCELERATE MORE THEN HALF THROTTLE.... WTF?

Lack of Fuel?

In all of this, did you ever think of taking it to a professional?
Just a thought because it seems you're not and I don't mean it in an offensive way, just perplexes me when people want to fix something that isn't working and the first thing they do is jump on a forum of largely inexperienced people. I mean inexperienced in the sense of:
1. true diagnostics
2. The car is no where near most of them to even begin to understand the myriad of things it may or may not be doing.

You're in newy, so I reccommend taking it to Blacktrack performance. A known and reputable builder and tuner of all things fast.

Just saying,...... you could be boosting to a big smile much sooner and with less headache of pretending to know what to do because most of us (self included) simply won't know your issues.

what ecu does it have ?

spark blow out?
Running out of fuel?

Take Wes' advise and take it to someone.

The first major questions are: Fuel system, ECU, boost level and valve springs. What are they? Then we can have a rough idea of what the issue may be, or if a reputable workshop (Like Blacktrack, as Wes suggested) can diagnose the issue easily.