First log!!! need input

[mattspyder]

alright heres my first log!!! let me know what you guys think..

time, stft, Ltft, RPM, Timin, airflo, 02 1 02trim 1, 02 2 02 trim 2
01.81, 0.0,-7.0, 2770.0, 16.0, 6.58, 0.98, 0.0, 0.92, 0.0
03.63, 0.0,-7.0, 3051.0, 14.0, 8.28, 1.0, 0.0, 0.9, 0.0
05.46, 0.0,-7.0, 3328.0, 10.0, 10.53, 1.0, 0.0, 0.9, 0.0
07.28, 0.0,-7.0, 3535.0, 8.0, 12.79, 1.0, 0.0, 0.9, 0.0
09.10, 0.0,-7.0, 3746.0, 8.0, 14.49, 1.02, 0.0, 0.9, 0.0
10.93, 0.0,-7.0, 3980.0, 8.0, 15.35, 1.02, 0.0, 0.92, 0.0
12.73, 0.0,-7.0, 4246.0, 8.0, 16.62, 1.02, 0.0, 0.94, 0.0
14.56, 0.0,-7.0, 4441.0, 8.0, 17.39, 1.0, 0.0, 0.96, 0.0
16.37, 0.0,-5.0, 3531.0, 33.0, 0.46, 0.74, 0.0, 0.92, 0.0
18.20, 5.0,-5.0, 1223.0, 16.0, 0.47, 0.86, 5.47, 0.02, 5.47
20.02, 5.0,-5.0, 422.0, 5.0, 1.1, 0.98, 4.69, 1.0, 4.69
21.84, 2.0,-5.0, 652.0, 7.0, 0.92, 0.98, 3.13, 0.98, 2.34
23.63, 0.0,-5.0, 977.0, 6.0, 0.43, 0.94, 0.78, 0.96, 0.0
25.46, 0.0,-5.0, 941.0, 3.0, 0.5, 0.08, 0.0, 0.86, 0.0
27.29, 0.0,-5.0, 3102.0, 23.0, 0.49, 0.02, 0.0, 0.02, 0.0
29.11, 0.0,-5.0, 2988.0, 23.0, 0.49, 0.0, 0.0, 0.0, 0.0
30.93, 1.0,-5.0, 2805.0, 23.0, 0.49, 0.0, 0.0, 0.0, 0.0
32.74, 0.0,-5.0, 2645.0, 33.0, 1.59, 0.68, 0.0, 0.62, -0.78
34.56,-2.0,-7.0, 2613.0, 29.0, 3.09, 0.82, 0.0, 0.66, -0.78
36.38,-5.0,-7.0, 2695.0, 27.0, 3.74, 0.36, -3.91, 0.3, -3.12
38.18,-1.0,-7.0, 2742.0, 28.0, 3.3, 0.44, -2.34, 0.32, -2.34
40.02, 0.0,-7.0, 2738.0, 27.0, 3.9, 0.06, 0.0, 0.14, 0.0

 

[liquordrunk]

okay here is ur first hint on how to tune.. make a 3rd gear pull from like 2grand all the way to redline.. also dont log. time,stft, Ltft or air flow and only log "1" o2 reading

 

[spyderturbo007]

okay here is ur first hint on how to tune.. make a 3rd gear pull from like 2grand all the way to redline.. also dont log. time,stft, Ltft or air flow and only log "1" o2 reading

Yes, liquordrunk is correct, drop the FT's, the second bank O2 sensor and all of the O2 trims. Be careful with the 3rd gear pull, you will be reaching speeds over 100mph with a GST so you need a lot of road. I tend to tune at night when the roads are less congested. Also, the SAFC is easier to read in the dark....hell, I can't even see mine during the day


I disagree with not logging airflow. It looks like he is getting a decent number of samples/second, so another parameter won't hurt anything. Airflow allows you to see air mass entering the engine per revolution (g/rev). This allows you to see if you are on the ECU's highest timing map.

But everyone tunes in their own way, so you have to do what works for you.

 

[CanadianTSi]

Airflow is presented in lbs/min not grams/rev.

 

[spyderturbo007]

Yes, most loggers provide the airflow in lbs/min, but the ECU uses g/rev. The ECU uses load (based on g/rev) and rpm to come up with a timing advance number to "shoot for". Anything over 2.1 g/rev places you on the highest load map within the ECU. I should have clairified that you need to do a calculation to convert lbs/min to g/rev.