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Old 01-08-2010, 05:25 PM   #1
Scooby Newbie
Member#: 192679
Join Date: Oct 2008
Chapter/Region: NWIC
Location: Seattle, WA
2002 WRX Wagon
Stage 2 [Sold]

Default Getting engine knock @ low RPMs & also running lean after Stg2 Map

Below is the LearningView of my '02 WRX as of a few days ago. Has improved after applying the Stage 2 map.
Also replaced the spark plugs a month ago (NKG plugs).

Sept 2009 - Stock map

Jan 2010 - After Stg2 map & new NKG plugs

Only mod done is a full catless exhaust (up-pipe/down-pipe/3" catback). Still getting readings of low airflow. The filter is a couple years old, but not filthy. Also the stock ram-intake and snorkel was removed (Been removed for years).

Any pointers of what may need adjusted or suggestions to a different map would be quite helpful.


ROM used: A4SGE01C - MY02 OSECU Stage 2 r10.hex
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Old 01-08-2010, 06:00 PM   #2
Scooby Newbie
Member#: 222350
Join Date: Sep 2009

First thing is to get your MAF rescaled mate I think for both OL and CL.
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Old 01-08-2010, 06:48 PM   #3
Scooby Specialist
Member#: 108089
Join Date: Feb 2006
Chapter/Region: MWSOC
Location: Minnesota
2003 WRX
NF Performance


How sure are you that it's running lean? Wideband?
If so, post logs.
The learning view looks fine, you can remove a little timing in the higher loads.
Low load knocks are normal.

Should not have to rescale the maf if still on the stock intake.
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Old 01-09-2010, 07:55 AM   #4
Sammo Hung
Member#: 10613
Join Date: Sep 2001
Chapter/Region: South East
Location: S Ga / N Fla


you might want to clean or replace air filter..
while you're there clean your maf sensor.
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