SAFC Low Map Help

[Apeximprt2nr]

Hey, I've been having trouble getting my Lo settings on my SAFC down. I know how the AFC works and what everything does so you don't have to preach to me on that. What I am confused about is when I tune my lo settings in the driveway revving up, they'l be down pat, but the correction #'s will be relativley low (i.e. -8, -12, etc.)

BTW, I'm running FIC 650's.

Now once I get my FT's down revving in the drivway I'll go and cruise and instantly my FT's will be pig rich (STFT -15).

So I go on the highway to tune and if I hold steady the gas at say 3k RPM's the FT's will be near 0. But the moment I step my foot on the gas a tad more (about 15% TPS) the FT's will be back to pig rich.

So I posted a log of me idling and cruising at different throttle positions.

You'll notice idle is fine.
-Around 10% TPS and LOWER my FT's will be very LEAN (STFT +15, etc.)
- Around 15% TPS my FT's will get better (STFT +5 or so)
-Around 18% TPS and above my FT's are near perfect.

So what do I tune for, because if I tune for 18% + TPS, if I'm on the highway holding my speed at a steady RPM my FT's will be very lean, which will make my LTFT start to lean out.

EDIT: Removed log, since it was pointless. New log is posted below.

 

[Apeximprt2nr]

I realized that log was pointless without RPM, so I made another log, but with RPM as well.

TPS Trigger Points: 30%/ 85%
Sensor Type: Karman
Car Select: 4 Cyl., Throttle: Arrow pointed NE

Lo:
1k: -7
1.4K: -17
2k: -25
2.4k: -28
3k: -28
3.4k: -26
4-7.4k: -26

STFT LTFT RPM TPS O2
0 -1 760 1 120
0 -1 768 1 840
0 -1 760 1 620
0 -1 748 1 80
0 0 756 1 100
0 0 776 1 240
0 0 776 1 700
0 0 736 1 840
0 0 1092 1 40
1 0 1152 9 920
1 0 1308 9 920
-3 1 1900 9 40
2 1 2192 9 100
13 1 2384 9 860
15 1 2504 9 840
15 1 2616 9 100
16 1 2712 9 100
16 1 2744 9 600
-4 0 1164 8 940
0 0 1472 8 860
-1 0 1572 8 120
0 0 1660 8 160
2 0 1740 8 800
2 0 1800 8 120
4 0 1852 8 260
5 0 1892 8 820
6 0 1940 8 760
7 0 1976 8 640
10 0 2040 8 100
15 0 2084 8 80
17 0 2188 8 80
17 0 2296 9 100
17 0 2452 9 100
17 0 2540 9 100
17 0 2656 9 60
17 0 2696 9 80
17 0 2768 9 80
17 0 2832 9 80
17 0 2900 9 440
15 0 2992 9 60
-4 0 2980 1 0
0 0 2560 1 0
0 0 2132 1 0
0 0 1820 3 0
0 0 1592 6 60
3 0 1560 7 220
4 0 1632 16 640
3 1 1932 15 680
-1 1 2276 14 700
0 1 2464 15 620
1 1 2596 15 760
1 1 2672 15 780
3 1 2800 15 780
0 1 2928 15 860
0 1 3044 16 880
0 1 3172 16 820
0 1 3276 15 220
1 1 3284 1 820
0 0 2884 1 0
0 0 2516 3 0
0 0 2244 10 20
3 1 2256 11 800
7 1 2388 9 120
8 0 2452 9 300
16 0 2472 8 760
16 0 2468 8 80
17 0 2464 8 60
17 0 2464 8 60
17 0 2452 8 60
17 0 2464 7 40
17 0 2456 7 40
17 0 2436 7 40
17 0 2388 7 40
17 0 2324 8 60
17 1 2432 12 800
11 1 2620 12 840
6 1 2844 12 800
3 1 3016 11 820
5 1 3156 11 800
7 1 3256 9 120
14 0 3264 8 0
-4 0 3240 9 20
8 0 3312 9 680
16 0 3380 9 480
17 0 3416 9 540
17 0 3492 5 20
0 0 2316 3 0
-4 0 2300 9 40
7 0 2356 9 80
17 0 2432 8 80
17 0 2472 8 60
17 0 2492 8 60
17 0 2508 8 40
17 0 2520 8 40
17 0 2500 8 60
17 0 2512 8 60
17 0 2508 8 60
17 0 2528 8 60
17 0 2584 11 60
17 1 2736 13 880
8 1 2912 13 860
4 1 3016 12 280
7 1 3076 13 100
7 1 3072 12 760
3 1 3052 9 860
4 0 2972 7 60
17 0 2876 8 800
15 0 2800 11 660
10 1 2780 14 660
12 1 2772 16 700
3 1 2780 16 300
2 1 2848 16 260
0 1 2972 16 240
0 1 3096 16 860
-2 1 3176 1 380
0 0 3140 1 0
0 0 3104 1 0
0 0 3008 1 0
0 0 2888 1 0
0 0 2764 1 0
0 0 2636 1 0
0 0 2536 1 0
0 0 1132 1 940
0 0 968 1 920
-1 0 980 1 880
-4 0 912 1 720
-7 0 888 1 80
-5 0 900 1 40
-3 0 916 1 100
-2 -1 908 1 800
-1 -1 896 1 800
-2 -1 784 1 100
-1 -1 760 1 40
-1 -2 724 1 760
0 -2 844 1 40
0 -2 860 1 80
1 -2 808 1 840

 

[spyderturbo007]

Move your 2k Ne point to -20%, the 2.4k to -20%, and the 3k to -20%. Go for a cruise to let things settle down, then do another log.

You're pulling out too much fuel and the ECU is attempting to compensate by moving your trims in the positive direction. We need to do the same thing with the SAFC that the ECU is doing with the trims. So if you see positive trims, you need to move the SAFC correction factors in the positive direction and vice versa.

 

[Apeximprt2nr]

Nathan, here's the new log. I moved the 2k to -18, 2.4k to -19 and 3k to -20. You'll see that this made the STFT better (not perfect though, I still need to pull a bit more fuel) when my TPS is around 9% and lower. Once I hit around 11% TPS I start to get rich. and what's really strange is 20% TPS, I run VERY rich.

**Notice the bold numbers. Those are examples of each type of TPS % and corresponding STFT I'm experiencing.

As you can see the general concensus is with little throttle I run very lean, and as I add a little throttle I run very rich.


STFT LTFT RPM TPS O2
0 0 776 1 140
1 0 756 1 100
1 0 768 1 140
1 0 768 1 140
0 0 748 1 600
0 0 772 1 480
0 0 776 8 40
0 0 1812 11 300
3 2 1456 10 880
-3 2 2232 10 820
-3 2 2672 10 800
0 2 2924 10 80
4 0 2956 5 0
0 0 2340 1 0
0 0 1476 5 20
0 0 1400 8 700
0 0 1816 8 80
4 0 2120 8 840
7 0 2352 8 880
8 0 2516 8 80
10 0 2628 8 840
10 0 2692 8 160
11 0 2716 8 700
10 0 2732 8 880
9 0 2812 9 840
4 2 2968 10 860
4 2 3144 10 840
-4 0 2084 9 800
1 2 1912 15 860
-1 2 2324 14 800
-9 2 2664 14 860
-8 2 2924 15 760
-6 2 3140 15 380
-5 2 3344 12 920
-1 2 1964 1 0
0 0 2100 36 840
0 2 2456 9 940
-4 0 2436 1 0
0 0 2348 1 0
0 0 2236 1 0
0 0 2116 1 0
0 0 2008 1 0
0 0 1932 18 820
1 2 2148 20 880
-4 2 2396 20 740
-11 2 2636 20 840
-12 2 2876 19 680
-11 2 3024 19 860
-11 2 3196 16 820
-12 2 3272 1 820
-1 2 2380 7 360
-3 0 2356 7 80
4 0 2344 8 800
6 0 2324 8 840
5 0 2332 8 820
6 0 2308 8 840
7 0 2288 8 680
7 0 2300 9 420
7 0 2356 10 740
0 2 2396 11 840
-1 2 2416 12 620
-2 2 2448 12 540
-3 2 2516 11 280
-3 2 2508 9 80
-1 2 2516 11 200
0 2 2524 11 320
-2 2 2548 11 820
-4 2 2568 11 800
-4 2 2596 11 620
-3 2 2632 11 300
-3 2 2636 11 160
-3 2 2612 1 20
0 0 2452 1 0
0 0 2248 1 0
0 0 2060 1 0

By the way, how do I post up a log correctly? I don't like this all close together, it's hard to read.

Thanks.

 

[spyderturbo007]

That's better, but still needs a little more work. Don't be concerned with the TPS values, just the rpm / FT correlation. Since your Lo TPS trigger point is set at 30%, anything below that value will be pulled from the Lo throttle correction table.

Move to -20% on the 2k map, -23% on the 2.4k map and -22% on the 3k map. Go for a nice long cruise and then make another log.