help! maybe serious problems with sr20det

[mynameisjonas]

i've been working on my sr20det swap since christmas time and i just can't get it running right. my biggest problem is it shoots alot of oil out of the blow off valve. i thought it was my turbo so i called the place i got my engine and they sent me a different turbo which looks in good shape with no shaft play , spins freely etc. i put that one in and it still shoots lots of oil! it also runs like crap. it hesitates and won't let me get into power. i have an o2 sensor from a 87 300zx turbo which i'm wondering if i hooked that up right or not and if that's causing it to run crappy. i really need all the help i can get, i'm getting sick of this i just need it to run. oh i also have a greddy catch can tank so it's not from blowby or whatever.