Welcome to the North American Subaru Impreza Owners Club Saturday January 31, 2015
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo)

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 06-29-2014, 04:12 PM   #1
sk8rzch
Scooby Newbie
 
Member#: 372547
Join Date: Nov 2013
Location: pittsburgh, pa
Vehicle:
2009 impreza wrx
pearl white

Default 09 wrx running rich at half throttle

So my wrx while driving normal at about half throttle my wide band reads 10:1 (richest wide band reads). While I boost it reads 10.4:1. I am tuned to be at 11.2-11.3:1 at wot. Any ideas? I checked all my intercooler clamps, and the BOV vac line. I did just have a clutch put in so the car was taken apart. Just noticed this the yesterday since I don't drive the car much.

My mods are, AEM intake Perrin turbo inlet, process west tmic, GFB BOV, id1000 injectors, dw65c fuel pump, Invidia catless turbo back, Grimmspeed uppipe with tial 38mm ewg Grimmspeed ebcs and I am protubed.

Thanks!
* Registered users of the site do not see these ads.
sk8rzch is offline   Reply With Quote
Old 06-29-2014, 04:36 PM   #2
Andrewxxcarlson
Scooby Specialist
 
Member#: 316415
Join Date: Apr 2012
Location: Elk Grove, CA
Vehicle:
2006 WRX
WRB

Default

Sounds like a front o2
Andrewxxcarlson is offline   Reply With Quote
Old 06-29-2014, 05:14 PM   #3
sk8rzch
Scooby Newbie
 
Member#: 372547
Join Date: Nov 2013
Location: pittsburgh, pa
Vehicle:
2009 impreza wrx
pearl white

Default

Quote:
Originally Posted by Andrewxxcarlson View Post
Sounds like a front o2
I compared my wideband to the front o2 already and they read the same. Well .1-.2 difference at idle and while driving. But when it does the super rich thing, it won't go below 11:1 and the wideband will read 10:1. Still sound like o2? Even under WOT the front o2 won't go below 11:1. (I know the front o2 doesn't read accurately at wot!)
sk8rzch is offline   Reply With Quote
Old 06-29-2014, 08:18 PM   #4
sebi1990
Scooby Newbie
 
Member#: 362910
Join Date: Jul 2013
Chapter/Region: MWSOC
Location: Chicago
Vehicle:
2013 Impreza WRX
White

Default

Clean the MAF and maybe the o2 sensors?
sebi1990 is offline   Reply With Quote
Old 06-29-2014, 09:24 PM   #5
sk8rzch
Scooby Newbie
 
Member#: 372547
Join Date: Nov 2013
Location: pittsburgh, pa
Vehicle:
2009 impreza wrx
pearl white

Default

Quote:
Originally Posted by sebi1990 View Post
Clean the MAF and maybe the o2 sensors?
I'm going to do that now.
sk8rzch is offline   Reply With Quote
Old 06-29-2014, 09:35 PM   #6
Andrewxxcarlson
Scooby Specialist
 
Member#: 316415
Join Date: Apr 2012
Location: Elk Grove, CA
Vehicle:
2006 WRX
WRB

Default

Quote:
Originally Posted by sk8rzch View Post
I'm going to do that now.
Not with brake clean! MAF cleaner!
Andrewxxcarlson is offline   Reply With Quote
Old 06-29-2014, 09:54 PM   #7
sk8rzch
Scooby Newbie
 
Member#: 372547
Join Date: Nov 2013
Location: pittsburgh, pa
Vehicle:
2009 impreza wrx
pearl white

Default

Quote:
Originally Posted by Andrewxxcarlson View Post
Not with brake clean! MAF cleaner!
I know haha. My problem is solved!!! My intercooler piping that goes to the throttle body was the cause. The clamp was tight but the clamp wasn't straight. It actually sat correctly at the top but at the bottom it was off the piping. I overlooked that......

Last edited by sk8rzch; 06-29-2014 at 11:11 PM.
sk8rzch is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 06:04 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.