550 injector & lexus air flow troubles o2 sensor?

[night-rider]

Okay so i installed 550s and the lex afm with factory sensor and an adjustable fuel pressure regulator while i was doing this i noticed the signal wire from the o2 sensor was broken on the clip so i fixed this and installed an air fuel gauge but it wouldnt work the gauge wouldnt show anything so i tryed connecting the gauge straight to the o2 sensor signal wire with the wiring harness connection undone (heater wires still plugged in just signal disconnected) and the car ran the exact same and says im coming up rich so i figured the wiring harness wire for the signal wire is grounding out somewere so i decided to run my own wire from the o2 sensor to the pcm now it will idle in stoich but if i give it even the slightest bit of throttle it bogs down runs rough and then catches itslef and brings the idle back up which is fairly high i might add if i set it to low it bogs to much its sitting around 1000-1200 it cant seem to make up its mind it will keep going back and forth anybody got any ideas?

[cre]

Paragraphs, commas, periods... you'll get more replies if people can read your post.

Try again and I'll see if I can help.