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Old 02-28-2012, 05:05 PM   #1
bugI-rx
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Member#: 307546
Join Date: Jan 2012
Chapter/Region: NESIC
Location: Haverhill, MA
Vehicle:
02 Wrx
Psm

Default 02 wrx stage 2 knock?

I just did a few data logs and to me it looks like im getting knock at higher rpm. does anyone have any input? kinda new to this datalogging thing too. sorry for the crappy image. excell wont let me copy for some reason.
my mods are
cobb intake
invidia catless bellmouth downpipe
jna performance catback
cobb accessport v.2 stage 2 93oct. 3.0
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Old 02-28-2012, 06:16 PM   #2
Black94Snake
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Location: RI
Vehicle:
2007 CGM VF'd WRX
12.70 @ 108.4mph

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use the "adjust timing" feature in your AP to pull 3 degrees of timing. drive the car for a day or two, then re-log a WOT pull.
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Old 02-28-2012, 07:33 PM   #3
bugI-rx
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looking much better, no more fine knock, however im still getting feedback knock? is this normal? i read up on it but still dont quite understand what could be causing this.

https://docs.google.com/spreadsheet/...KYTFrY0E#gid=0
https://docs.google.com/spreadsheet/...DhPbFVUSXY3ekE
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Old 02-28-2012, 07:42 PM   #4
Black94Snake
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2007 CGM VF'd WRX
12.70 @ 108.4mph

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you should add "knock sum" to your datalog
You also might want to consider buying a wideband.
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Old 02-28-2012, 07:52 PM   #5
bugI-rx
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02 Wrx
Psm

Default

thanks, I appreciate the help.

edit: just check and I dont think I have it. its the sub-001
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Old 02-28-2012, 08:05 PM   #6
Black94Snake
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2007 CGM VF'd WRX
12.70 @ 108.4mph

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i'm not sure about the differences between the 001 and 002. I was just recalling what I use in my logs.
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Old 02-29-2012, 11:20 AM   #7
Cobb Tuning
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First, I would recommend downloading the newest v3.10 maps directly from our website. These are all new maps that work much better than the older ones. When you do the map change, make sure it is a Reflash map change, not just a Realtime. You will need to connect the green test mode connectors and the initialization connector. Also, on the older WRXs, it is very important to make sure maintenance is up to date (spark plugs, clean air filter, etc.) and that there are no boost/intake tract leaks. Once you change your Reflash map, post another log and we'll see how it is running!

Ian
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