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Old 01-14-2013, 03:51 PM   #1
JJL91
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Just installed a cobb catted downpipe on my car a few days ago. Just wondering how this log looks. It's a 2nd and 3rd gear pull.

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Old 01-15-2013, 08:37 AM   #2
Cobb Tuning
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Originally Posted by JJL91 View Post
Just installed a cobb catted downpipe on my car a few days ago. Just wondering how this log looks. It's a 2nd and 3rd gear pull.
If you can do so safely, try to get a 3rd gear pull only from 2500 RPM on up. What octane map is this?

Bill
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Old 01-15-2013, 11:46 AM   #3
JJL91
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Here are two third gear pulls. 93 octane map. Looks like I'm getting knock.




Last edited by JJL91; 01-15-2013 at 11:54 AM.
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Old 01-16-2013, 10:32 AM   #4
Cobb Tuning
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Originally Posted by JJL91 View Post
Here are two third gear pulls. 93 octane map. Looks like I'm getting knock.



The fine knock learning appears to have been learned previously and not in these logs. Try adding the 4 knock sum values to the logs. You'll see values in these parameters (usually higher in cylinder 4), but don't be concerned with the values themselves - they are meaningless. We want to see if they increment during the WOT run.

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Old 01-16-2013, 03:37 PM   #5
JJL91
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No knock in this log and another one I did. So I think everything is good. Thanks for the quick reply's.

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Old 01-16-2013, 04:29 PM   #6
Cobb Tuning
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No knock in this log and another one I did. So I think everything is good. Thanks for the quick reply's.

Looks good. You can continue logging with the knock sum to see if the fine knock learning is learned again - may have just been on lift-throttle at the end of the WOT run (that can happen at times and is just noise).

I would try to post up future logs up on google docs if possible - it can be hard to read a small screenshot like that.

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