Help with my log...

[Cool Mr Steve]

RPM Timing O2 1 Bank 1
2552 23 0.88
2632 22 0.9
2716 20 0.92
2796 16 0.92
2880 15 0.92
2988 12 0.92
3108 11 0.94
3344 9 0.94
3612 5 0.86
3768 5 0.94
3884 7 0.84
4040 8 0.96
4136 9 0.96
4300 9 0.98
4428 9 0.92
4560 9 0.98
4680 9 0.92
4836 10 0.98
4984 10 0.98
5160 11 0.98
5420 11 0.98
5548 13 1
5660 14 1
5832 14 1
5904 15 1
6044 16 1
6160 16 1
6376 16 1

 

[Cool Mr Steve]

Check my profile for the modifications, the SAFCII is set for -3% across (not -13%... -3%). I have one VERY SMALL boost leak, which I don't think is the culprit, but my car seems to want to stutter at different RPM levels while under full boost. Any suggestions are welcome.

 

[wingzgsx]

I'm not sure why you have -3% rather than -13% for 550cc injectors? The log shows you are running very rich, hence your o2 readings (not exactly a reliable source) and the jerking when in boost at high different RPMs. I would suggest going to -10%, do a log, repost the log and lets see the outcome. Also, log your TPS for a sanity check that it stays > 85% at WOT. Your o2 readings when full boost is jumpy... not sure what to make of that yet.

 

[MyTGSX]

3108 11 0.94
3344 9 0.94
3612 5 0.86
3768 5 0.94


either you got some knock that retarted the timing or this was where you went WOT.

another good reason to log TPS, and Knock would be good too.


Post up the new one when you get it.

Aslo what are you using for Logging?

 

[CanadianTSi]

Fix your boost leaks first and then tune...

 

[Cool Mr Steve]

Each time I log a run, my o2 readings drop pretty low (as low as .24) before jumping right back up to saying that its rich... Could this be because of a small boost leak???

 

[wingzgsx]

How are you judging that the boost leak(s) are small? The pressure drop over a period time, the hole size, etc? I personally consider all boost leaks to be a problem especially when tuning for fuel trims and WOT. Boost leaks could make tuning a nighmare All your tuning now will most likely have to be done again after fixing the leaks.

 

[92_laser]

3108 11 0.94
3344 9 0.94
3612 5 0.86
3768 5 0.94


either you got some knock that retarted the timing or this was where you went WOT.

another good reason to log TPS, and Knock would be good too.


Post up the new one when you get it.

Aslo what are you using for Logging?

When you car hits full boost (around 3500 for him) the ECU will retard the timing a little bit to help protect the engine from all that instantly added power. TPS would be nice to log but unfortunately 2g's cannot log knock like 1g's, on a datalogger/palmlogger.

From your first log I would also say that you are running rich especially on your high end, your boost leak could be causing that problem or you might need to take some more fuel out. I would check the boost leak first.... hope this helps