My stage 2 logs (Mickeyd stg1 based) How do they look

[black318i]

I didn't see AFR #1 in the logger menu so I thought you ment A/F Learning #1. Is it the WB O2 (my LC-1) output you want to see?

[mickeyd2005]

Oh. I didn't know you had an LC-1. You should always log the LC-1.

 

However, I'm looking for AFR #1 which is the front O2 sensor. It will tell you what is going on with the CL to OL transition.

[black318i]

Ok so log Parameter - Front O2 sensor #1, Unit -V right? I see there is a Front O2 sensor #2, I assume this is the post cat O2?

[mickeyd2005]

No. We don't have a front O2 sensor #2. That's only for the H6.

 

The front O2 sensor should have units of either AFR or lambda or mA. I don't believe it should be voltage.

[black318i]

Ok so A/F Sensor #1

 

http://i124.photobucket.com/albums/p38/mrsalty75/Forum/NewBitmapImage.jpg

[Spec B]

Here are some logs of random driving. Mostly typical and some not so typical driving habits.

 

Looks like you had a knock event at Time: 678215, while under boost. Other than that, logs looks pretty clean.

[black318i]

Ok so A/F Sensor #1

 

http://i124.photobucket.com/albums/p38/mrsalty75/Forum/NewBitmapImage.jpg

 

Anyone?

[testes1010]

^yes. A/F Sensor #1.

[snow05gtRI]

Ok so A/F Sensor #1

 

http://i124.photobucket.com/albums/p38/mrsalty75/Forum/NewBitmapImage.jpg

 

heh, I thought you were answering your own question when posting this shot. It's the 13th option down in the left-most column. has "AFR" in the dropdown box for units.

[black318i]

Latest logs

 

http://www.box.net/shared/nz1exh0oke

http://www.box.net/shared/6s8xqacyyq

[mickeyd2005]

The three knocks that I found of interest are:

 

load rpm
1.19 3788
1.44 3085
2.64 4197

 

The first one could be intermittent. It only showed up once even though you drove through that range several times.

 

The middle one was building boost. There may have been some lag in MAF response.

 

The 3rd one was right after a shift. There was a knock right during shift when it was too lean. The first knock probably caused the second knock.

[black318i]

So how do I address the knock issue or do I not have enough data yet. Should the FLKC table stay all 0's or are minor corrections considered acceptable? Also I checked my exhaust and could not find any leaks. I retorqued every nut and bolt and they were all fine. What else could cause A/F learning #1 A to go so positive?

[mickeyd2005]

What does your learning view look like?

 

There are lots of strategies to address shift knock. Most of them don't work very well. One thing you can do is either shift slowly (me) or you can shift quickly but don't completely let go of the throttle. Keep a little bit on the throttle.

 

This map does not address shift knock.

 

As for the other knock, those are relatively minor.

 

If your FLKC is showing significant FLKC that wasn't logged, then you'll need to RESET the ecu, and immediately start logging. Do continuous 2000 to redline logs at various CONSTANT throttle until you cover the entire map and find the knock.

 

Or you can just reduce the base timing in the FLKC zone by 0.7 degrees.

[black318i]

Here are the last two learnig views. The rest are already posted. I've been resetting my ecu a bit lately and I've lost track of how much driving I've done before each view, but its roughly 30-60 min. I'll work on some constant throttle loggs this weekend.

 

http://i124.photobucket.com/albums/p38/mrsalty75/Forum/LearningView_SS_11-15-200851821PM.jpg

 

http://i124.photobucket.com/albums/p38/mrsalty75/Forum/LearningView_SS_11-20-200851805PM.jpg

[mickeyd2005]

Oh, sorry. I forgot that your problem is AFR Learning C.

 

Your situation is not dangerous but it does look like you will need to scale your MAF for your configuration. Since you have a WBO2, you can use the method outlined here:

 

http://www.romraider.com/forum/topic1871.html

 

Before you start, double check all your connections. The last thing you want to do is tune a car with a leak.

 

The large positive AFR Learning A is usually indicative of a small leak in the exhaust manifold or near the upipe joint. Look for ash trails. However, it could just be your setup.

[black318i]

Would a leak from my IC explain my issues

[mickeyd2005]

Not really. If you had a leak in your IC, I would expect AFR Learning D to be more negative.

[black318i]

Hmm ok well if not now I fear it will soon. I found one bent tab that pretty much broke off.

[black318i]

I would do it like this. However, you don't need to scale your MAF.

 

http://www.romraider.com/forum/topic1871.html

 

Does the data for this tool not require an ECU reset before logging?

[mickeyd2005]

No. It doesn't require an ecu reset. In fact, it works better if everything is stabilized.

[black318i]

So I installed a Perrin TMIC and now I get overboost. I thought there was a pressure drop with a larger IC. Do I tune this out with Max WGDC?

 

http://www.box.net/shared/9ekbqvn07o

http://www.box.net/shared/02pzcfx1lp

[testes1010]

I thought there was a pressure drop with a larger IC. Do I tune this out with Max WGDC?

 

Exactly, a lower pressure drop across the core = more pressure at the manifold.

 

The max table definitely needs to be reduced a bit & it looks as though you may have to work on the TD tables as well.

[mickeyd2005]

So I installed a Perrin TMIC and now I get overboost. I thought there was a pressure drop with a larger IC. Do I tune this out with Max WGDC?

 

http://www.box.net/shared/9ekbqvn07o

http://www.box.net/shared/02pzcfx1lp

 

I can't see the logs. box.net must be down or something.

 

Lower INITIAL AND MAX WGDC by the same amount in the rpms where you are exceeding boost target.

 

Make sure that the difference between INITIAL and MAX are unchanged from the original map. This is very important.

 

Don't touch the turbodynamics.

[black318i]

Ok thanks I'll update the maps and post logs. Here is a screen shot of the log.

 

http://i124.photobucket.com/albums/p38/mrsalty75/Forum/log.jpg

[mickeyd2005]

You should drop initial and max by about 30% and retune the timing table.

 

You probably want to check your fueling too. When AFR #1 = 12.63, your true AFR = VERY LEAN.

 

You've got a LOT of knock going on there.

 

Something's very wrong.