Need SAFC Tuning advice. Logs inside

[90 TSI FWD]

So the Talon had it's first WOT run today since the stock rebuild (at ~1100 miles), but now I need some help. I'm unsure on where I should richen/lean out the Safc because the timing, knock, and AFRs are not getting along. My "NE Points" are

800
1400
2000
2400
3000
3400
4000
4400
5000
5400
6000
6400
7200.

A quick factoring mod list would be an Evo 3 16g at 20psi, Evo 3 Manifold, 2g o2 housing, Apexi downpipe-back, 2G Mas, Fmic, AFPR at ~38psi, 780s, Uego, HKS 264/272 cams, and a Jestr chip. The safc is zeroed across the "Hi" setting. Where should I start "correcting?"




Throttle RPM Knock Timing Wideband
10.59% 2156.25rpm 0 37.00º 18.17176556
19.22% 2250.00rpm 0 31.00º 15.11294174
19.61% 2375.00rpm 0 33.00º 15.11294174
20.00% 2343.75rpm 0 34.00º 19.11294212
20.39% 2250.00rpm 0 33.00º 18.11294202
20.78% 2156.25rpm 0 33.00º 15.40705941
22.35% 2156.25rpm 0 32.00º 11.87764731
22.35% 2312.50rpm 0 32.00º 13.58352983
22.35% 2312.50rpm 0 32.00º 14.05411811
22.35% 2343.75rpm 0 31.00º 13.46588276
22.35% 2343.75rpm 0 31.00º 13.23058862
21.18% 2343.75rpm 0 32.00º 13.52470629
20.39% 2375.00rpm 0 32.00º 13.58352983
20.39% 2375.00rpm 0 33.00º 14.17176518
20.39% 2375.00rpm 0 33.00º 14.23058871
20.00% 2375.00rpm 0 34.00º 14.05411811
20.00% 2406.25rpm 0 34.00º 13.46588276
20.00% 2406.25rpm 0 34.00º 13.11294155
18.82% 2406.25rpm 0 34.00º 13.11294155
18.43% 2406.25rpm 0 35.00º 13.64235336
18.04% 2437.50rpm 0 35.00º 14.05411811
18.04% 2437.50rpm 0 35.00º 14.05411811
15.29% 2406.25rpm 0 35.00º 13.58352983
15.29% 2406.25rpm 0 36.00º 13.64235336
15.29% 2406.25rpm 0 37.00º 14.05411811
15.29% 2406.25rpm 0 37.00º 14.70117699
14.51% 2406.25rpm 0 37.00º 16.17176537
19.61% 2375.00rpm 0 38.00º 16.17176537
21.57% 2437.50rpm 0 36.00º 15.46588295
25.49% 2406.25rpm 0 34.00º 12.28941206
30.98% 2406.25rpm 0 31.00º 11.17176489
45.49% 2468.75rpm 0 28.00º 11.93647085
58.43% 2468.75rpm 0 27.00º 11.93647085
66.67% 2468.75rpm 0 26.00º 11.70117671
87.45% 2500.00rpm 0 25.00º 17.11294193
88.24% 2531.25rpm 0 24.00º 13.81882397
100.00% 2593.75rpm 0 23.00º 14.05411811
100.00% 2625.00rpm 0 22.00º 13.93647104
100.00% 2656.25rpm 0 21.00º 13.93647104
100.00% 2718.75rpm 0 20.00º 14.11294164
100.00% 2781.25rpm 0 19.00º 14.28941225
100.00% 2812.50rpm 0 18.00º 14.28941225
100.00% 2843.75rpm 0 17.00º 15.11294174
100.00% 2875.00rpm 0 15.00º 15.81882416
100.00% 2937.50rpm 0 14.00º 16.46588304
100.00% 3000.00rpm 0 15.00º 17.46588314
100.00% 3062.50rpm 0 15.00º 17.46588314
100.00% 3156.25rpm 0 14.00º 17.70117728
100.00% 3218.75rpm 0 14.00º 17.76000081
100.00% 3281.25rpm 0 14.00º 17.46588314
100.00% 3343.75rpm 0 15.00º 17.34823607
100.00% 3468.75rpm 0 15.00º 17.46588314
100.00% 3500.00rpm 0 15.00º 17.17176546
100.00% 3625.00rpm 0 15.00º 16.76000072
100.00% 3687.50rpm 0 16.00º 16.64235365
100.00% 3812.50rpm 0 16.00º 16.70117718
100.00% 3843.75rpm 0 17.00º 16.64235365
100.00% 3937.50rpm 0 17.00º 16.70117718
100.00% 4000.00rpm 0 18.00º 16.70117718
100.00% 4093.75rpm 0 18.00º 16.99529486
100.00% 4187.50rpm 0 18.00º 17.11294193
100.00% 4281.25rpm 0 18.00º 17.11294193
100.00% 4343.75rpm 0 18.00º 17.230589
100.00% 4437.50rpm 5 18.00º 17.46588314
100.00% 4500.00rpm 5 16.00º 16.87764779
100.00% 4593.75rpm 4 16.00º 17.34823607
100.00% 4625.00rpm 4 16.00º 17.34823607
100.00% 4687.50rpm 4 16.00º 17.34823607
100.00% 4781.25rpm 4 17.00º 17.4070596
100.00% 4843.75rpm 4 17.00º 17.28941253
100.00% 4937.50rpm 4 17.00º 17.28941253
100.00% 5000.00rpm 3 17.00º 16.52470658
100.00% 5062.50rpm 3 18.00º 14.93647113
100.00% 5062.50rpm 3 18.00º 14.8776476
100.00% 5125.00rpm 3 18.00º 12.58352973
100.00% 5218.75rpm 3 18.00º 10.1717648
100.00% 5125.00rpm 3 18.00º 10.1717648
100.00% 5218.75rpm 2 18.00º 8.701176423
100.00% 5281.25rpm 2 18.00º 8.407058748
100.00% 5312.50rpm 2 19.00º 8.348235213
100.00% 5312.50rpm 2 19.00º 8.348235213
100.00% 5437.50rpm 2 19.00º 8.407058748
100.00% 5406.25rpm 2 19.00º 8.348235213
100.00% 5437.50rpm 1 19.00º 8.348235213
100.00% 5531.25rpm 1 20.00º 8.407058748
100.00% 5500.00rpm 1 20.00º 8.348235213
100.00% 5593.75rpm 1 20.00º 8.348235213
100.00% 5562.50rpm 1 20.00º 8.407058748
100.00% 5656.25rpm 0 20.00º 8.348235213
100.00% 5656.25rpm 0 20.00º 8.407058748
100.00% 5687.50rpm 0 20.00º 8.348235213
100.00% 5718.75rpm 0 20.00º 8.348235213
100.00% 5781.25rpm 0 20.00º 8.348235213
100.00% 5750.00rpm 1 20.00º 8.407058748
100.00% 5812.50rpm 0 20.00º 8.348235213
100.00% 5875.00rpm 0 20.00º 8.701176423
100.00% 5906.25rpm 0 20.00º 8.936470563
100.00% 5937.50rpm 0 20.00º 8.936470563
100.00% 5968.75rpm 0 20.00º 8.465882283
100.00% 6031.25rpm 0 20.00º 8.407058748
100.00% 6000.00rpm 0 20.00º 8.407058748
100.00% 6093.75rpm 0 20.00º 8.407058748
100.00% 6062.50rpm 0 20.00º 8.407058748
100.00% 6093.75rpm 0 20.00º 8.407058748
100.00% 6218.75rpm 0 20.00º 8.407058748
100.00% 6125.00rpm 0 20.00º 8.348235213
100.00% 6218.75rpm 0 20.00º 8.701176423
100.00% 6187.50rpm 0 20.00º 8.407058748
100.00% 6281.25rpm 0 20.00º 8.407058748
77.65% 6281.25rpm 0 20.00º 8.407058748
10.20% 6093.75rpm 0 20.00º 8.289411678
10.20% 5875.00rpm 0 45.00º 17.34823607
10.20% 5468.75rpm 0 45.00º 17.05411839
10.20% 5218.75rpm 0 45.00º 16.93647132
10.20% 4875.00rpm 0 44.00º 16.40705951
10.20% 4656.25rpm 0 43.00º 15.40705941

 

[spyderturbo007]

You see have a column labeled wideband, but what are we logging there? Is that AFR?

Have you done your closed loop tuning yet? If so, what are your low throttle correction factors and where do you have your TPS trigger points set?

 

[90 TSI FWD]

You see have a column labeled wideband, but what are we logging there? Is that AFR?

Have you done your closed loop tuning yet? If so, what are your low throttle correction factors and where do you have your TPS trigger points set?

Yes, that is the AFR. I have done closed loop already.. still trying to get the idle perfect. I can't remember exactly what the lower corrections on the RPM scale, but from 3000 and up, they were -4. The TPS trigger points are set at 30 and 80%.


On another note, I believe that I might have to throw this information away. I think I have an exhaust leak at the flex section of the downpipe. I'm thinking this is throwing my readings off because the o2 cycle is not agreeing with the wideband readings. When I was adjusting the correction factors at idle using the wideband, the car kept idle-surging. No matter how much I richened at idle, the UEGO kept reading off of the lean scale, when the Fuel Trims were reading very rich. When I 'tuned' using the fuel trims, the car idled alot better.

While doing WOT runs, I'm assuming the faster flowing exhaust air inturn takes in alot of outside air through the flex, causing the wideband readings to be thrown off? Can it affect the readings that much? In the log I have posted, the car did break up, or started to accelerate like a NA car, in the higher RPMs... I'm going to have to get a new flex welded in before I post a more accurate run.

 

[spyderturbo007]

Yep, that's exactly what happens. It's called the Venturi Effect and will play hell with a WBO2 reading. I had the same problem when I first installed my WBO2. At idle, the AFR would start out around stoich, then move leaner and leaner, until the UEGO reported "---". At WOT, the reading was way off on the lean side of things.

 

[90 TSI FWD]

Hmm, I was thinking it was more of Bernoulli's principle, but I see the Ventury effect relates to it. I'll post back when I decide to get the leak fixed.