Engine starts/revs but no idle

[GenkiMotors]

The connectors on the back are color coded, so I'm sure I didnt mix them up. I even confirmed on the other 2 stock engines near me the positioning of the connectors. *edit*just checked, green on green, brown on brown

The plot thickens...

So I bought a new timing light because I thought my old one wasnt working right. Erratic sparking on Cyl #1 sometimes nothing at all. Happened with the new timing gun too so I checked it on another car and it worked fine. Pulled my new plugs and they were black, cleaned them up and tried again. Engine ran a little better but then the erratic timing lights started to happen again. Checked my wideband and it was fairly rich. Cleaned the plugs again, and this time opened up the idle adjust screw all the way, and set my Super AFC to go as lean as possible. It still was rich but now it held a very low and unstable idle for about 15 seconds before dying.

What could be causing me to be running so rich? This was with a stock ECU, stock injectors, stock spec fuel pump. O2 sensor? My MFE ECU has a switch that disables the O2 sensor and stock fuel cut.