First Log... Bad O2s?

[havok735]

I have a 95 GSX and this is my first log and I know you are supposed to do it to 6k, but I didn't know that at the time. Anyways, I did it WOT in 3rd.

RPM --- Timing --- O2 1 --- O2 2

1384.0 --- 21.0 --- 0.06 --- 0.0
1404.0 --- 20.0 --- 0.06 --- 0.04
1464.0 --- 21.0 --- 0.64 --- 0.04
1556.0 --- 21.0 --- 0.72 --- 0.66
1692.0 --- 22.0 --- 0.08 --- 0.32
1900.0 --- 20.0 --- 0.1 --- 0.1
2116.0 --- 16.0 --- 0.82 --- 0.54
2376.0 --- 15.0 --- 0.72 --- 0.56
2632.0 --- 15.0 --- 0.72 --- 0.54
3004.0 --- 9.0 --- 0.72 --- 0.52
3324.0 --- 9.0 --- 0.96 --- 0.84
3772.0 --- 10.0 --- 0.96 --- 0.84
4148.0 --- 11.0 --- 0.98 --- 0.84
4548.0 --- 13.0 --- 0.98 --- 0.86


Up toward the top the timing looks horrible and the O2s are as well right?

The other factor that I am not sure about other than if the O2s are good is when I bought the car it had AEM Cam Gears on it and they are both advanced 2 marks. Should I set this back or leave it like that?

 

[tigerstalon]

Things look ok. What's probably confusing you is that, until about 3000rpm, the ECU is still in closed-loop mode, which means it is aiming for fuel efficiency. That's why you see timing above twenty and O2's zinging around. Once it enters open-loop mode, the timing should initially get pulled down to 10 or so and gradually rise as the rpm's rise, and O2's should stay above 0.90 (close to 1.00 for stock 2G).

Check out the 2G logs in this thread to see many examples of what to look for in stock and tuned form:
http://www.dsmtuners.com/forums/showthread.php?t=140670

 

[havok735]

Thanks!

The one thing I logged and didn't post was my TPS which is really bothering me not since it never gets anywhere near 100. It just kinda jumps around. Like for that run it looked like:

RPM --- Timing --- TPS --- O2 1 --- O2 2

1384.0 --- 21.0 --- 2.75 --- 0.06 --- 0.0
1404.0 --- 20.0 --- 6.29 --- 0.06 --- 0.04
1464.0 --- 21.0 --- 12.97 --- 0.64 --- 0.04
1556.0 --- 21.0 --- 13.36 --- 0.72 --- 0.66
1692.0 --- 22.0 --- 14.15 --- 0.08 --- 0.32
1900.0 --- 20.0 --- 27.11 --- 0.1 --- 0.1
2116.0 --- 16.0 --- 33.4 --- 0.82 --- 0.54
2376.0 --- 15.0 --- 33.4 --- 0.72 --- 0.56
2632.0 --- 15.0 --- 35.36 --- 0.72 --- 0.54
3004.0 --- 9.0 --- 35.76 --- 0.72 --- 0.52
3324.0 --- 9.0 --- 36.15 --- 0.96 --- 0.84
3772.0 --- 10.0 --- 36.15 --- 0.96 --- 0.84
4148.0 --- 11.0 --- 40.86 --- 0.98 --- 0.84
4548.0 --- 13.0 --- 39.29 --- 0.98 --- 0.86


Can the TPS go bad?

 

[olmytsi]

you should log from about 3000rpm to redline for better results. 4000 rpms, your car is just starting to go, alot more happens past that. Something is wrong with your tps.

 

[Silver2GST]

Your TPS needs to be adjusted and its vary easy with a datalogger, just turn the logger on and watch your TPS value. now loosen the bolts on the TPS and rotate untill you see about 10% at rest and 90%+ at WOT. i hope

 

[diambo4life]

1. Adjust your TPS to show 100% at WOT first.
2. Make pull from 2800ishRPM to redline in third or fourth WOT!!!
3. Disregard your O2 sensor values unless you have a wideband. Pay attention to your timing advance.