Picking up Knock--Log Included - Subaru WRX Forum
 
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#1 Old 09-16-2010, 08:45 PM
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Picking up Knock--Log Included

I have noticed my AFR have leaned out from my original targeted values at the upper RPM range. Right after flashing I was hitting my target of 10.8, but now a 5-6K miles later I am hitting 11.1-11.4 at redline. At the time of when I was road tuning I had no knock. Now with the leaner AFR I have noticed some knock between 5400-6500+ RPM.

Why is this happening?

I have attached a .CSV log file renamed to .DOC. Please rename to .CSV and view with Excel.
Attached Files
File Type: doc romraiderlog_20100916_193823.doc (4.5 KB, 106 views)

09 WRX K&N Typhoon Walbro 255 SPT BG AEM UEGO Tactrix2.0 XPT Stocks + Winter wheels w/Dunlop WS 3D
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#2 Old 09-16-2010, 10:18 PM
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Doesn't look to bad to me. What is your learn view doing?

Brad

AEM CAI, Perrin ELH wrapped, Catted Downpipe, Stage II XPT tune, K4RT30Y STS, lip, shark fin
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#3 Old 09-17-2010, 07:03 AM
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I have not looked at the learned view. Don't I have to have a before and after to really get anything out of it? I can pull it if it will tell me something.

It just concerns me that my AFR targets are no longer being met and now I am picking up knock. Is it normal for the ECU to lean out the targets?

09 WRX K&N Typhoon Walbro 255 SPT BG AEM UEGO Tactrix2.0 XPT Stocks + Winter wheels w/Dunlop WS 3D
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