studdering/jerking on acceration (sr20det)

[DMN]

So Ive had this car for about 2 months its always studdered a bit around 2500 and i let off the gas and it smooths out, today i turned up the boost 1psi and drove it to work in the rain, it bucked at 2.5k,3k,4k ran like crap, so i turned down the boost(dont think that caused it) still the same deal, also it does not rev freely it will studder/misfire at 2.5k 3k 4k and so on, it seems to be happier in open loop than closed loop but both are not great,

I have all vaccum lines ziptied, fpr is nismo and i have a walbaro 255 fuel pump,new spark plugs a week ago gapped at .028

oh yeah it also idles fine
and it also seems to hold boost fine

Please help i dunno what it could be