AFR's driving me nutzzz!!

[Josho]

I'm in serious need of help! I can't figure out why my afr gauge is constantly reading 10.0!! Details- s13 blacktop, redtop wiring harness, all redtop sensors, cams, gt2871, 850cc inj., Nismo fpr, z32 mafs, fmic, I.H.E., enthalpy ecu. At fire up the afr(AEM wideband) starts around 14.5, it'll slide over to about 16ish and then slowly fall to 10.0. Regaurdless of where the fuel pressure is set, if I adjust the fp ithe afr will go up a little but falls right back down. My plugs are blackbut not soaked in fuel. blowing out black smoke of course. Some things I've also noticed.; AFR 10.0 idleing @900rpms, vac reading btween 6.5-6.9. Also, my temp hand NEVER reaches normal
Op temp. It'll get just above C and sit there.
Anyway, I can take offand my afr will bounce around 12ish but will fall right back to 10.0 after a few seconds. When I pull it out of gear after cruising, it will try to shut off on me until I rev it up a few Times.