low, low 02 sensor voltage

[chet]

if anyone would care to take a look at my log file, i tuned the 8.1 up to the power enrichment stage, (didn't get a chance to tune the MAF, so disregard the LTrims) no matter what i do, stock program or any one of the program iterations, the o2 voltage drops below 100MV immediately after full throttle transition and stays that way. no rhyme or reason, but i am getting some spark knock (from being lean),

NO DTC codes. ??? i was thinking 02 sensor, but wouldn't they throw a code? also, could it be the fuel filter?

thanks in advance, let me know and i'll email you the file.

[Screamn03]

I'd like to take a look [email protected]

[stevewix]

i helped chet with this tune, and the o2 sensors go choppy, really choppy once in a while during normal driving, and always during WOT.

please send me your email addresses, i can send you the scan file.

also, the MAF is disabled (for tuning purposes of the VE table), the fuel filter has been replaced to eliminate that variable. could it be o2 sensor related? no burned wires so i'm stumped.

[Screamn03]

http://hometown.aol.com/screamn03cobra/chet81.hpl

http://hometown.aol.com/screamn03cobra/chet81rev1.bin

http://hometown.aol.com/screamn03cobra/chet81rev5.hpl