1G First log - Bad O2 sensor?

[pdxkris]

I just got my logger working, and made a few 2nd gear pulls (I know you guys prefer 3rd gear pulls, but I don't have anywhere to safely do so at the moment). I have tons of knock, and my o2 seems to cut out around 6000rpm and sometimes quickly once or twice in the lower RPM ranges.

Would I be correct in assuming my o2 sensor is bad? If so, might that be related to the knock, or is that a separate problem I need to troubleshoot?

I'm mostly stock (just K&N + MBC), currently set to 14psi. Here's one of the logs, shortened to just show the pull itself:


Time (secs), Air Flow Hz (Hz), Engine Speed (RPM), Injector Pulse Width (ms), Knock Sum, Oxygen Sensor (V), Throttle Position (%), Timing Advance (°)
5.96,233.03,2000,4.61,0,0.8,18.82,30
6.22,163.75,2031.25,3.07,0,0.86,18.82,33
6.48,144.85,2093.75,2.82,0,0.84,21.57,33
6.75,188.94,2125,4.61,0,0.12,36.86,23
7.03,340.09,2218.75,6.4,0,0.12,99.61,22
7.28,384.18,2312.5,7.42,0,0.86,100,21
7.52,415.67,2375,7.68,0,0.76,100,22
7.76,459.76,2531.25,7.94,0,0.78,100,22
7.99,510.14,2687.5,7.94,0,0.8,100,21
8.22,554.23,2812.5,8.45,0,0.66,100,21
8.45,610.91,2968.75,9.22,0,0.82,100,21
8.68,667.59,3187.5,9.73,0,0.86,100,21
8.92,730.57,3343.75,10.5,0,0.86,100,20
9.16,825.04,3593.75,11.26,0,0.86,100,19
9.41,938.41,3750,12.03,3,0.86,100,18
9.66,1070.67,4000,14.08,9,0.86,100,14
9.93,1284.8,4250,16.13,16,0.86,100,8
10.21,1555.62,4468.75,19.2,29,0.78,100,5
10.49,1606,4750,19.97,35,0.16,100,4
10.78,1606,5093.75,19.71,35,0.82,100,7
11.08,1606,5406.25,19.46,38,0.84,100,7
11.37,1606,5625,19.2,38,0.82,100,8
11.68,1606,5718.75,17.41,43,0.74,100,5
11.97,1606,5906.25,17.41,43,0.57,100,5
12.23,1606,6218.75,17.41,42,0,100,5
12.46,1606,6343.75,16.9,42,0,100,3
12.7,1606,6500,14.85,41,0,100,2
12.92,1606,6593.75,16.38,41,0,100,2
13.15,1606,6781.25,16.38,41,0,100,3
13.38,1606,6687.5,15.87,40,0,65.88,3
13.64,1064.37,6562.5,2.3,34,0.88,9.8,37
13.9,176.35,6062.5,1.54,8,0.72,9.8,45
14.15,119.66,5406.25,1.28,0,0.74,9.8,45
14.39,94.47,4812.5,1.28,0,0.7,9.8,44
14.64,81.87,4125,1.28,0,0.72,9.8,26
14.91,69.28,3343.75,0,0,0.8,9.8,26
15.18,69.28,3187.5,0,0,0.02,9.8,26

The other pulls, and unedited version of the above one (#6) can be found here:

http://67.222.37.191//HostedFiles/DSM/Logs/8-8-2010/3.csv
http://67.222.37.191//HostedFiles/DSM/Logs/8-8-2010/4.csv
http://67.222.37.191//HostedFiles/DSM/Logs/8-8-2010/5.csv
http://67.222.37.191//HostedFiles/DSM/Logs/8-8-2010/6.csv

Here are links to the actual graphs for you visual types

http://67.222.37.191//HostedFiles/DSM/Logs/8-8-2010/3.png
http://67.222.37.191//HostedFiles/DSM/Logs/8-8-2010/4.png
http://67.222.37.191//HostedFiles/DSM/Logs/8-8-2010/5.png
http://67.222.37.191//HostedFiles/DSM/Logs/8-8-2010/6.png

Thanks for any insight!