SR20DET Idling problem..

[Stancyeze]

So I just finished up my S13 redtop SR20DET in my 96 240sx and it won't hold an idle. At first I was positive it was because I was running a Z32 MAF on a stock SR ECU, then I tried using my friends stock s13 sr mad and it didn't really help much. I can get the car to idle somewhat smooth if i let it run for a little and rev it up. Also, the car won't bleed any coolant... no sure if that has anything to do with it. The car seems to rev up kind of slow and doesn't really get much boost according to my boost gauge. Then again, i'm only hitting like 4-5k RPM.

I've checked my IC piping, everything tight. All couplers are tight. Haven't checked timing, TPS, or IACV yet, but i doubt any of that is off..