Help understanding log

[SpoolinGSX]

I have stock t25, stock injectors, 3.5 GM MAF, MAF Translator, 255 lph fuel pump. I was logging on my palm logger and i was doing a few WOT runs. I got short term fuel trims of 0% and timing of 18 with o2s of .94V. I dont know much about tuning but that sounds like its pretty decent for 6300 RPM @ 16 psi. I also logged another run around 6900 RPM @ 16 psi and got short term trims of 0%, o2s of .68V and timing of 32 degrees. That run seemed like the o2s and timing are off. I dont know why the numbers were different than the first run. Maybe heat soak? anyways if anyone can tell me if these numbers are alright or way off it would be much appreciated.

 

[Bohrn]

well, .68v is WAY too lean, I don't have a clue how you still got 32deg of timing advance.

I'm not a 2g guy tho, so maybe someone else will help you too.

 

[Mike 99GSX]

Are you sure thats not when you shifted or were decelerating? There's no way you have 32 degrees timing advance at WOT at that RPM. The first comment isn't bad. I would add more fuel and try to get your timing up to about 20. Also what gear was this in? You really need to list more RPM points. You might be fine on one point of the power band but bad somewhere else. Also, your STFT and LTFT mean nothing at WOT. They are for calibrating your low throttle settings during closed loop.

 

[NOSLO2PT0]

In order to get more timing, you need to decrease the amt. of airflow the ECU sees. When using an AFC, this means you need to LEAN it out. The 32 deg. timing is when you let off, as was the .68V being your O2's were cycling again since you weren't WOT any more.

REmember, less airflow seen by the ECU = more timing. That's why guys run 660's on 16G's on a 2G. Take out a LOT of fuel = fooling ECU into thinking less air coming in = ECU gives more timing.