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Need some advice on these logs

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flipnoy213

15+ Year Contributor
145
0
Mar 23, 2004
Stockton, California
Heres logs the night after a shop dyno tuned my car.

1st log 3rd gear
RPM Timing
3100 24
3184 22
3272 18
3456 11
3548 9
3632 9
3728 11
3864 12
3988 12
4092 13
4208 14
4292 13
4412 13
4504 13
4620 14
4720 14
4800 15
4928 14
5004 16
5132 17
5200 14
5316 16
5756 14
5800 16
5924 16
5960 16 < EGT was at 900c here so i pulled off
 
2nd log 2nd gear

RPM Timing
2964 33
2976 33
3172 27
3216 24
3428 16
3624 18
3792 12
3988 10
4288 10
4500 14
4688 13
4960 14
5140 15
5332 14
5580 15
5808 16
6016 15
6172 15
6464 17
6608 17
 
3rd log 3rd gear

RPM Timing O2
2864 27 .78
2992 25 .92
3084 23 .94
3208 19 .94
3380 14 .96
3708 14 .98
3900 12 .98
4040 11 .96
4336 12 .96
4452 11 .96
4568 12 .96
4744 12 .96
4884 12 .96
5016 14 .96
5180 15 .94
5244 14 .94
5408 12 .94
5572 13 .94
5636 13 .94
5720 14 .94
5896 14 .94
5988 14 .92 < EGT reached 900 so i pulled off

And heres my SAFC setting done at the dyno shop with boost at 13 psi
1000 2000 3000 3400 4000 4400 4600 5000 5400 6000 6400 7000
-16% -17% -30% -25% -31% -34% -36% -42% -41% -47% -42% -38% (Hi)
-21% -19% -20% -21% -30% -31% -20% -32% -26% -32% -27% -35% (Lo)

Well there are my log. You guys think the shop did a good job tuning my car?
Now i got no clue where to start off.
 
You mentioned that they tuned the AFC with the boost at 13psi. How much boost are you running in your logs?
 
andymoraitis said:
You mentioned that they tuned the AFC with the boost at 13psi. How much boost are you running in your logs?

I agree in the fact that more info is needed here.

My first impression is that you are too lean. At one point you are at -47%. That just doesn't seem right. Also, since you are so leaned out on the AFC your computer should be giving a ton of timing advance. since you are only seeing 14 at 6000, I'd say you are knocking quite a bit. The may have given you an okay tune for the track, but I wouldn't run it on the street or anything. Personally I would richen things up quite a bit in the 4600 to 7000 range. I say richen up, then crank the boost.
 
By how much % should i add to the 4600-7000. Where should i raise my boost to?

I should be able to do some runs tonite because the temps now is about 100 degrees.
 
Well i added +4% to 4600-7000 rpm, and raised boost to 16psi
S-AFC Settings
1000 2000 3000 3400 4000 4400 4600 5000 5400 6000 6400 7000
-16% -17% -30% -25% -31% -34% -32% -36% -37% -43% -38% -34% (Hi)

RPM Timing O2
2960 33 .02
3016 26 .84
3116 24 .92
3256 22 .94
3412 16 .96
3580 11 .98
3744 9 .98
4076 12 .98
4260 12 .98
4420 13 .96
4624 13 .96
4740 12 .98
4960 10 .98
5084 12 .96
5224 13 .96
5392 13 .96
5508 13 .96
5688 13 .96
6016 14 .96
6240 14 .94
6344 15 .94
6452 15 .96
6564 16 .96
6676 16 .96
6760 17 .96
6868 17 .96
6928 17 .96


This time my EGT was around 800 degree C :)
 
Did some runs tonight and i was able to tune out most of the knock except for around 4400-4700, 6100-6500 because i didnt wanna get CHPs attention.

Here my latest log that night at 16.6 PSI
RPM Timing O2
2676 24 .94
2772 23 .94
2896 22 .94
3020 21 .94
3168 16 .94
3332 12 .96
3452 8 .98
3640 7 .98
3796 7 .98
4016 9 .98
4300 11 .98
4468 10 .98
4624 10 .98
4800 11 .98
4932 11 .98
5096 12 .98
5272 12 .98
5428 12 .98
5556 13 .98
5704 14 .98
5860 15 .96
6000 16 .96
6124 17 .96
6344 15 .96
6472 15 .96
6596 16 .96
6676 17 .96
6808 17 .96
6916 18 .96
7020 18 .96
EGT stay around low 800 degree C

How much fuel % should i add to 4400-4700, 6100-6500 to rid of knock?
 
Your car's profile indicates a 255HP fuel pump, but no adjustable fuel pressure regulator (AFPR). Is this correct? If so, you need an AFPR or the fuel tuning will never be correct.
If you have one already, make sure it's set at 43psi at idle (vacuum off).
96-.98v is still on the rich side. Try removing some more fuel so you get .94v straight across and see if it improves. But this will only work with the AFPR.
 
I agree with the AFPR issue 1000%, but have to question why you'd want to tune that car at 13psi. That thing must be a dog considering that the EVO III really doesn't wake up and have fun until you go over 20psi. Oherwise, the timing map looks good on the logs with a steady rise and good peak advance.
 
Yeah i dont have a AFPR yet, so i guess ill get back at you guys as soon as i get one installed.
Which AFPR should i go for? I had my eyes on the Aeromotive A1000-6.

As for tuning at 13 psi, the guy who tuned my car supposedly said 13 psi the most i could go, i told him to get it to 21 psi but he wouldn't so i just said whatever.


Thanks for all the response
 
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