First Log

[1glaserturbo]

WTF
RPM Knk Timing o2
3000 42 -3 0.86
3031 42 -4 0.88
3063 41 -4 0.88
3125 41 -4 0.88
3156 41 -4 0.88
3188 41 -4 0.88
3250 41 -4 0.88
3250 43 -4 0.88
3313 43 -4 0.88
3375 43 -4 0.88
3406 43 -4 0.88
3469 42 -4 0.88
3500 43 -4 0.88
3563 43 -4 0.88
3594 43 -4 0.88
3656 14 1 0.9
3719 28 -2 0.88
3781 35 -4 0.9
3813 9 7 0.9
3875 22 0 0.9
3875 32 8 0.9
3969 9 5 0.9
4000 16 0 0.9
4063 9 8 0.9
4125 23 8 0.9
4188 16 1 0.9
4281 9 8 0.9
4281 22 -1 0.9
4313 23 7 0.92
4344 9 4 0.9
4406 9 7 0.92
4469 9 5 0.92
4500 9 5 0.92

I don't even KNOW where to begin!

 

[GVR4592]

I have a few suggestions. That is a lot of knock, you should check over all of the mechanical aspects of your setup before you proceed with any more tuning.

It would be helpful to know a few more things. What was the boost level during the run? What are your Safc settings at? Not just the correction factor, but all of the settings.

Check your base timing, verify your fuel pressure is at 37 psi, check for boost leaks, check compression in the cylinders, make sure the turbo is in good condition, and check the spark plugs to make sure they are the correct plugs, they are in good condition and gapped correctly.

 

[1glaserturbo]

Boost creeps to 17 lbs, then sets solid at 15 through redline. S-AFC settings are -10 for low across the boards, the Hi is 0 across the boards. Throttle points are 25%-75%.

My guess is that I'm not running enough fuel in the Hi setting, so I should make adjustments there. Plugs are basically brand new, Ngk 6's. Boost leaks are a negative, compression is 180 across the board, fp is stock at 37 lbs. Everything is in working order on the vehicle.

 

[GVR4592]

With 550's and 0 for safc settings I would imagine that would be pretty rich for 15-17 psi. Are you running a 2g maf or a hacked 1g maf or is it just a completely stock 1g? What is your base timing? Was that run at wot?

 

[1glaserturbo]

It's a hacked 1g maf, base timing is perfect a 5*tdc and yes, that was a wot run.

 

[GVR4592]

Does it knock like that under part throttle conditions as well or just at wot?

 

[1glaserturbo]

Under part throttle as well, here is another log I took earlier with a few things changed.
Time Rpm Knk Timing o2
0.1 3688.0 0.0 36.0 0.92
0.22 3688.0 9.0 30.0 0.86
0.34 3719.0 9.0 25.0 0.9
0.45 3750.0 9.0 22.0 0.9
0.57 3781.0 23.0 24.0 0.92
0.69 3781.0 43.0 8.0 0.92
0.81 3844.0 9.0 16.0 0.92
0.92 3844.0 16.0 12.0 0.92
1.05 3906.0 23.0 5.0 0.92
1.17 3969.0 9.0 8.0 0.92
1.29 4000.0 20.0 3.0 0.92
1.41 4031.0 30.0 7.0 0.92
1.54 4125.0 9.0 4.0 0.92
1.67 4094.0 43.0 -3.0 0.92
1.8 4250.0 16.0 2.0 0.92
1.92 4313.0 9.0 5.0 0.92
2.05 4344.0 23.0 8.0 0.92
2.18 4375.0 23.0 0.0 0.92
2.31 4469.0 43.0 -4.0 0.92
2.42 4500.0 23.0 7.0 0.92
2.53 4594.0 9.0 4.0 0.92
2.66 4625.0 9.0 7.0 0.92
2.8 4656.0 9.0 4.0 0.92
2.92 4656.0 9.0 7.0 0.92
3.05 4781.0 9.0 4.0 0.92
3.17 4875.0 9.0 7.0 0.92
3.31 4844.0 9.0 4.0 0.92
3.43 4906.0 9.0 2.0 0.92

Sorry the run was so short, I had traffic about 100 ft or so ahead of me, and decided it was best to slow down.

 

[GVR4592]

Try richening it up a bit and see if it helps. I don't think it will cure the problem though.

 

[1glaserturbo]

Ok, basically how I was explained for the S-AFC II is that anything above +/- 0 is "adding air" tricking the ECU into adding more fuel. How I look at it though, is the fuel map will stay the same because I get a harsh fuel cut if I raise the Hi settings anything above +5 and knock count skyrockets. My guess is that if I go below +/- 0 then I'm technically removing air, while the fuel stays the same, thus richening the a/f ratio. Am I correct?

By richening the ratio, should I go - or +?

Sorry, I'm a horrible n00b!

 

[fwdeclipse]

To make the ecu add fuel you have to trick it into seeing more air with would be +.That is probably why your seeing fuel cut because when you add the safc is telling the ecu that its seeing to much air and you hit fuel cut.

 

[1glaserturbo]

Then why is my knock and timing all over the place? I can't seem to keep it in control.

I'm starting to believe that my ecu is messed up, because 1st of all, it's not mine, it's a non-eprom I had to borrow from a local shop because I bought a chip that had nothing on it. So now my eprom is sitting in my closet, this is killing me!

 

[fwdeclipse]

It is possible to get rich knock.Have you tried taking fuel out to see if that helps any.

 

[1glaserturbo]

After talking to a buddy of mine, who is rather adept with tuning on the S-AFCII, we've come to the conclusion the ecu currently in my car is trash. It isn't mine fortunately, but unfortunately I'm still awaiting a Dsm Chip from Nathan to replace the blank one I bought a while ago. :Sigh:



Chris

 

[1glaserturbo]

Here is an update, looks a bit better
RPM Knk Timing o2
3250 24 16 0.1
3313 24 16 0.1
3375 24 17 0.1
3438 9 22 0.12
3500 13 19 0.12
3531 9 16 0.12
3625 8 14 0.14
3688 9 10 0.14
3781 9 11 0.14
3844 9 14 0.16
3969 9 12 0.16
4094 16 12 0.18
4188 15 8 0.18
4219 9 8 0.2
4375 9 8 0.22
4406 9 8 0.24
4531 9 8 0.24
4625 9 8 0.25
4656 9 9 0.27
4719 9 9 0.27
4781 9 9 0.29
4906 9 11 0.31
4969 9 10 0.31
4969 9 10 0.33
5094 9 10 0.35
5188 9 10 0.35
5219 9 10 0.37
5313 9 10 0.39
5344 9 10 0.39
5406 9 10 0.41
5500 9 10 0.43
5563 9 10 0.43
5563 9 10 0.45
5656 9 11 0.45
5719 9 11 0.47
5813 9 11 0.47
5656 9 24 0.39
5188 0 45 0.16
4813 0 44 0.06

Settings are low/high +/- 0 across the board.

Looks like I need to richen it up a little, should I go + or -?

 

[OverboostXS]

Technically you should go + but again i don't feel this will solve your problem. Was this WOT.. 17degrees with 24 counts of knock is pretty scary. I wideband would help lighten some problem areas, I doubt the 190lph fuel pump is overrunnin your FPR.

 

[1glaserturbo]

Technically you should go + but again i don't feel this will solve your problem. Was this WOT.. 17degrees with 24 counts of knock is pretty scary. I wideband would help lighten some problem areas, I doubt the 190lph fuel pump is overrunnin your FPR.

WOT isn't until a little after 3500 rpm, sorry

 

[OverboostXS]

Getting closer add small incriments from 3500 up. Knock should drop some.

 

[1glaserturbo]

Knock went through the roof. I added +3% from 3k-6.5k and blah.

Went out to see if my o2 sensor or my knock sensor was loose, knock sensor was and had black goo on the bottom half of it. From what I've read, it sounds like my knock sensor is broken. It IS the original knock sensor from 1992, so I'm assuming it is.

 

[yangtech]

time for a new knock sensor...

 

[1glaserturbo]

Another log, this time it is -10 high across until 6k, then -5


RPM KNK TMG o2
3063 6 20 0.41
3125 6 19 0.41
3219 9 17 0.43
3281 13 14 0.45
3344 17 11 0.45
3438 16 10 0.47
3500 16 9 0.47
3563 16 10 0.47
3688 15 10 0.49
3781 15 11 0.49
3875 19 11 0.51
4063 18 11 0.51
4094 18 11 0.53
4156 18 11 0.55
4281 17 12 0.55
4344 17 12 0.57
4531 17 12 0.57
4594 16 12 0.59
4656 16 12 0.59
4750 16 13 0.59
4781 15 14 0.61
4938 15 14 0.61
5031 16 14 0.61
5125 15 15 0.63
5188 15 15 0.63
5250 15 16 0.65
5344 15 16 0.65
5438 14 17 0.65
5563 14 17 0.65
5625 14 18 0.67
5688 13 18 0.67
5813 13 18 0.67
5813 13 18 0.67
5906 13 19 0.69
5938 12 20 0.69
6063 12 20 0.69
6063 12 20 0.69
6094 13 18 0.71
6219 12 18 0.71
6219 12 17 0.71
6250 12 17 0.71
6250 12 17 0.71
6344 12 17 0.73

It's still pissing me off. Should I try and go a little more -? That seemed to help a little, but I just arghh!

 

[1glaserturbo]

I got this thing down, woohoo!

RPM KNK TIM o2
3250 0 38 0.06
3250 0 38 0.57
3250 0 38 0.76
3250 0 38 0.63
3281 0 30 0.25
3281 0 28 0.88
3281 0 27 0.9
3375 0 25 0.9
3375 0 25 0.9
3406 0 24 0.9
3438 2 21 0.9
3500 2 18 0.92
3531 2 16 0.9
3594 1 15 0.9
3625 1 15 0.9
3688 1 15 0.9
3781 1 16 0.9
3844 0 17 0.9
3938 0 18 0.88
4031 0 18 0.9
4125 0 18 0.9
4188 0 18 0.88
4219 0 18 0.9
4344 0 18 0.9
4406 0 18 0.9
4406 0 18 0.9
4563 0 18 0.9
4719 0 18 0.9
4781 0 19 0.9
4844 0 19 0.9
4844 0 19 0.9
4875 0 19 0.9
5000 0 19 0.9
5031 0 19 0.9
5094 0 20 0.88
5125 0 20 0.88
5125 0 21 0.88
5219 0 21 0.88
5313 0 21 0.88
5375 0 21 0.88
5438 0 22 0.88
5500 0 22 0.88
5563 0 22 0.88
5688 0 23 0.88
5688 0 23 0.88
5656 0 23 0.88
5719 0 23 0.88
5781 0 23 0.88
5906 0 23 0.88
5875 0 24 0.88
6000 0 24 0.88
6031 0 24 0.88
6063 0 24 0.88

 

[fwdeclipse]

What did you end up doing,adding or subracting to get it right.

 

[1glaserturbo]

I'm sitting at -15 Hi throttle

 

[power=dsm]

it looks like he added fuel

 

[1glaserturbo]

it looks like he added fuel

No, I was pig rich and was knocking because of it. o2 values were well below .5 = stupid rich conditions. Took away fuel