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

zigforjustice · 01-08-2010, 04:25 PM

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.

Thanks

ROM used: A4SGE01C - MY02 OSECU Stage 2 r10.hex

* Registered users of the site do not see these ads.

uk300bake · 01-08-2010, 05:00 PM

First thing is to get your MAF rescaled mate I think for both OL and CL.

Nuke209 · 01-08-2010, 05:48 PM

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.

jaxscuby · 01-09-2010, 06:55 AM

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

01-08-2010, 04:25 PM	#1
zigforjustice Scooby Newbie Member#: 192679 Join Date: Oct 2008 Chapter/Region: NWIC Location: Seattle, WA Vehicle: 2002 WRX Wagon Stage 2	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. Thanks ROM used: A4SGE01C - MY02 OSECU Stage 2 r10.hex * Registered users of the site do not see these ads.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

01-08-2010, 05:00 PM	#2
uk300bake Scooby Newbie Member#: 222350 Join Date: Sep 2009	First thing is to get your MAF rescaled mate I think for both OL and CL.

01-08-2010, 05:48 PM	#3
Nuke209 Scooby Specialist Member#: 108089 Join Date: Feb 2006 Chapter/Region: MWSOC Location: Minnesota Vehicle: 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.

01-09-2010, 06:55 AM	#4
jaxscuby n00b Moderator Moderator Member#: 10613 Join Date: Sep 2001 Chapter/Region: South East Location: F L O R I D A Vehicle: 2002 USDM WRX WRB	you might want to clean or replace air filter.. while you're there clean your maf sensor.