Low O2 but no knock

[Twistin6]

Wondering if this even sounds possible? I am seeing 730 at 16psi with 93 octane and 0.0 This was a pull in drive and no downshifting. In first and second I was seeing 760-770. FP at 45 line off. Just want to error on the safe side. BLM are 124-134 at light cruise Int is 128. Only parameter according to SM that is off a little is IAC with the 212 cam I can't get a reading from 10-40 and have a idle rpm that I can live with. I dont think it is hurting anything this way but thought I would throw in all the info for relative opinions on the low O2. The rest of the mods are in the sig.

Trying to get it ready for alky and get away from race gas. This thing in draining my piggy bank at 7.50 Gal.

Thanks,

 

[Twistin6]

After doing a little more reading here I may have answered my own question. I am leaning toward the values being relative to the O2 sensor being a bosch unit.

TTT