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Old 09-06-2012, 05:54 PM   #1
radbitt
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Default 2012 Stock WRX Stage 1 Datalog - Noob question

Hey guys! So I just got my AP and installed it today. Flashed my car with the stock 93 octane map.

Here's the data

I watched the tutorial video on youtube, and to me this log looks good. The only thing I was wondering is if I should be seeing a slight change in A/F Learning? I know you want the number to stay around 0, but I wasn't sure if the fact that it is 0 throughout the entire rev range is normal.
And if I do another log over the next couple weeks, I should see the few values of -1.4, for Fine Knock Learning, go towards 0, correct?

Thanks for any help. I'm learning, but really appreciate the input from the people who have been doing this for awhile.
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Old 09-06-2012, 06:06 PM   #2
kaczmarz
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A/F Learning 1 hasn't learned anything yet!
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Old 09-06-2012, 06:50 PM   #3
radbitt
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Quote:
Originally Posted by kaczmarz
A/F Learning 1 hasn't learned anything yet!
Duh. Told you it was a noob question.
So as I continue driving it, the ecu will learn and adjust as necessary. Thanks dude!
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Old 09-06-2012, 10:40 PM   #4
AuthenticAMD
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Don't know about the A/F Learning, but adding the knock sum values to the log will help in determining if the FLKC is perceived knock or just applying it from the past. If it was really knocking there, which it seems like it is, then that is not a good thing.

Yes, the knock numbers should go to 0 if it doesn't see any more knock.
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Old 09-07-2012, 10:11 AM   #5
Cobb Tuning
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Quote:
Originally Posted by radbitt View Post
Hey guys! So I just got my AP and installed it today. Flashed my car with the stock 93 octane map.

Here's the data

I watched the tutorial video on youtube, and to me this log looks good. The only thing I was wondering is if I should be seeing a slight change in A/F Learning? I know you want the number to stay around 0, but I wasn't sure if the fact that it is 0 throughout the entire rev range is normal.
And if I do another log over the next couple weeks, I should see the few values of -1.4, for Fine Knock Learning, go towards 0, correct?

Thanks for any help. I'm learning, but really appreciate the input from the people who have been doing this for awhile.
Log looks good. The single count of fine knock learning is not generally a big deal - you sometimes see this learned as false knock when lifting off the throttle abruptly at the end of a WOT run. You can add the knock sum values to your log as AuthenticAMD suggested. That will tell you if the fine knock learning learned an event right then or it is correction based on a past event. Don't be concerned with the values themselves for knock sum (they are essentially meaningless) - just look at when they increment during your WOT run.

Just get a few more WOT logs (if you can do so safely) and we'll see how it looks.

Bill
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Old 09-09-2012, 03:49 PM   #6
radbitt
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Thanks for the info guys. I'll get a few more logs soon and add knock sum values in there.
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Old 09-10-2012, 05:07 PM   #7
radbitt
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Here's 2 datalogs I got today while driving. I added in knock sum as a few had mentioned.
First
Second

I know that 2 & 4 pick up a lot of false knock, which it looks like it did between runs. I see 4 pick up some when I lifted off the throttle in the first run, but it picked up 1 count while at WOT in the second. Not sure what that would be from.

Thanks again for checking this out guys!
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Old 09-11-2012, 08:10 AM   #8
Cobb Tuning
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Quote:
Originally Posted by radbitt View Post
Here's 2 datalogs I got today while driving. I added in knock sum as a few had mentioned.
First
Second

I know that 2 & 4 pick up a lot of false knock, which it looks like it did between runs. I see 4 pick up some when I lifted off the throttle in the first run, but it picked up 1 count while at WOT in the second. Not sure what that would be from.

Thanks again for checking this out guys!
Given the single count of feedback correction in the 2nd log in the middle of the WOT run and consistent multiple counts of fine knock learning in that area, this is probably a case of an issue with fuel quality. I would make sure you are using a high quality fuel - some have had better luck with the so-called "top-tier" fuels. To add a little more of a knock buffer, I would reflash the 91 octane map while still running the 93. The reported knock isn't excessive (the knock in the first log is just false knock on lifting the throttle), but it is always good to be on the more conservative side of things.

Bill
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Old 09-17-2012, 08:01 AM   #9
radbitt
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Thanks for the help Bill! Here's 2 new logs with the 91 octane map.
First
Second
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Old 09-17-2012, 09:49 AM   #10
Cobb Tuning
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Quote:
Originally Posted by radbitt View Post
Thanks for the help Bill! Here's 2 new logs with the 91 octane map.
First
Second
Those logs look good. I would stick with that map.

Bill
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