Welcome to the North American Subaru Impreza Owners Club Tuesday March 19, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Engine Management & Tuning > Open Source Reflashes

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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 12-13-2014, 08:37 PM   #1
Detrex
Scooby Newbie
 
Member#: 278613
Join Date: Apr 2011
Chapter/Region: MWSOC
Vehicle:
2016 WRX
ICM

Default Running super rich after battery disconnect

I searched for an hour and i have yet to find an answer to my problem, so if anyone has any ideas Id really appreciate it.

I had to fix a headlight wiring issue today, so I disconnected the battery for about 4 hours while finding the problem, tightening up some ground bolts, and splicing in a new headlight pigtail. When I started my car up, it was running completely different from before.

To start, 2002 wrx with blouch 16g xt, id1000 injectors, tmic, turbosmart ewg, etc. All tuned using OS/ECUFlash. I'm currently running Michigan e85.

I use an AEM UEGO AFR gauge to get it e-tuned. I know the AFR of e85 isn't actually at these values, I haven't changed the dial from gas to e85 though, so these values are just for reference.

So instead of idling (warm) at an AFR of 15.6 like it used to, it idles at an AFR at 11.0. What's more is that anything more than 10% throttle and the AFR buries to 10 on the uego, the bottom of the gauge range. It hesitates at anything more than 1 pound of boost as well.

I'm not sure if this has to do with the fact that the map was made when it was warm outside, and the ecu had learned to cope with the cold Michigan weather over time or what.

I already have an email out to my tuner, unfortunately I haven't learned to read logs or enough to start tinkering myself.

So what should I do in case my tuner can't get back to me soon? Reflash the e85 tune? Go back to the completed 93 octane tune? I didn't do anything other than disconnect the battery and mess with the headlight wires (spliced in a headlight pigtail).

Thanks for the help!
* Registered users of the site do not see these ads.
Detrex is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 12-15-2014, 05:06 PM   #2
BeastianSTI
Scooby Specialist
 
Member#: 310506
Join Date: Feb 2012
Chapter/Region: South East
Location: Florida
Vehicle:
2005 WRX STi
CGM

Default

Sounds like you messed up a ground or something.

Sent from my SM-G900P using NASIOC mobile app
BeastianSTI is offline   Reply With Quote
Old 12-15-2014, 07:01 PM   #3
Detrex
Scooby Newbie
 
Member#: 278613
Join Date: Apr 2011
Chapter/Region: MWSOC
Vehicle:
2016 WRX
ICM

Default

You know I thought of that. But after like 30 miles and a rest overnight, its running fine. I'm chalking it up to e85 being finicky.

Sent from my HTC One_M8 using NASIOC mobile app
Detrex is offline   Reply With Quote
Old 12-16-2014, 12:56 AM   #4
BeastianSTI
Scooby Specialist
 
Member#: 310506
Join Date: Feb 2012
Chapter/Region: South East
Location: Florida
Vehicle:
2005 WRX STi
CGM

Default

True. I'm not sure if the cold could also be a contributing factor. What are your fuel trims, im curious

Sent from my SM-G900P using NASIOC mobile app
BeastianSTI 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 12:24 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.