I have a question, if i can't disable the O2 feedback on the S14RT, how am i supposed to fine tune my K value?
I've talked to a guy on Ka-t.org, and he suggested using address E038 and changing F1 to D1 to disable the 02. However, on the xdf i have, it says "do not touch."
I'm lost.

Hmm...I'm not sure. Are you talking about stock injectors? From what I have done to set the k-value with great success is turn off o2 feedback. Then set your enrichment table to where you cruise usually, with almost no load, to 0. Then just cruise around and adjust the k-value until you are getting about 14.7 on your wideband.

I understand what you're saying, but the S14 xdf doesn't have a O2 disable on it.