Engine will not Idle after replacing new Rod/Main Bearings

[timreaper20]

Ok I have a 92, Nissan 240sx s13 KA24DE motor, I just got finished with replacing my thrashed rods and mains, and timing kit. After the rebuilding was finished we preped the engine for a start, after a short while of cranking it started and the RPMs shot right up to 2500, then went right to a stall... I did everything necessary like oiling the rod/mains and cams before starting. So I looked around and noticed a blown intake gasket so I replaced, did noting, looked around some more then noticed a trash injector, replaced and did nothing to solve the issue then finnaly I shoved my arm up the induction box and blocked off the MAF sensor and it actually stayed at an Idle, a ruff but stable idle, so I thought that was it, replaced it and still nothing!!! Note: (It drives with some sputter but after I give it some throttle it will drive like normal but as soon as i ley off the throttle it wants to stall out about 2000 rpm I don't know if it's in the MAF wiring or what, when I disconnect the MAF sensor it acts even worse so I know it's getting connection. It did idle before I took it apart, it did have a missfire in cylinder 1 but thats gone now. I checked all the vacuum lines and everything seems the way it should be. One other thing at some point trying to figure all this out I blew my Engine Control Fusable Link, I replaced it because I had no Ignition. So any ideas would be appreciated. I do have the timing correct, I timed it with a timing light aswell. I'm also not getting any Engine lights or codes and the light does work. HELP lol
Modified by timreaper20 at 9:42 AM 12/24/2008

[timreaper20]

Nevermind, it was the intake manifold. Didn't seal right the first time...