Welcome to the North American Subaru Impreza Owners Club Sunday April 20, 2014
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

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 07-12-2009, 05:56 PM   #1
Suby Noob
Scooby Specialist
 
Member#: 60890
Join Date: Apr 2004
Chapter/Region: South East
Location: O-Town
Vehicle:
1994 Toyota Pick-Up
2009 DGM WRX Sedan

Default 09 WRX question - Logs inside

I posted awhile back when I first purchased my vehicle because I was feeling a slight hesitation in first gear around 2500-3000 RPMs under normal driving conditions (ie. Not WOT). It felt as though the engine would just shut off for a split second. I was informed by the powers that be (Unabomber), that it had something to do with the Open Loop/Close Loop programming implemented in all 2006 vehicles and onward (minus one vehicle of the manufacturers choosing for each model year that obviously being the STI). It has something to do with emissions I believe. Anyways, I was wondering if it is possible to see what is going on from the logs below. I was hoping someone with more knowledge could decipher this log. I was also wondering why the fuel injectors basically cut out at around 4.5 seconds into the log. That was where I shifted, but I thought the injectors just dropped to 1 or 2 percent when shifting like they do under idle. My only guess when it comes to the hesitation is the 0 for Fuel Trim (Short) at 2.25 seconds. I dont understand what the difference is between Fuel Trim Short and Fuel Trim Long; if someone wanted to explain that, I would greatly appreciate it. If not, there is always the search button... Oh, and the vehicle has is running the stock map, no other mods. Just an AP v2 married to it. Thanks.



* Registered users of the site do not see these ads.
Suby Noob is offline   Reply With Quote
Old 07-12-2009, 06:00 PM   #2
Suby Noob
Scooby Specialist
 
Member#: 60890
Join Date: Apr 2004
Chapter/Region: South East
Location: O-Town
Vehicle:
1994 Toyota Pick-Up
2009 DGM WRX Sedan

Default

I am asking the questions just to gain some knowledge. I understand that this is normal albeit obnoxious. I will post back after flashing to Stage 1 and let everyone know how the Cobb Stage 1 map smooths this OL/CL transition.



Shet - I just realized I posted in the 2.5L thread, please move to Engine Management section please.

Last edited by Suby Noob; 07-12-2009 at 06:09 PM.
Suby Noob is offline   Reply With Quote
Old 07-13-2009, 05:12 PM   #3
Suby Noob
Scooby Specialist
 
Member#: 60890
Join Date: Apr 2004
Chapter/Region: South East
Location: O-Town
Vehicle:
1994 Toyota Pick-Up
2009 DGM WRX Sedan

Default

Mods, please move to engine management section so I can hopefully get some answers.

Thanks
Suby Noob is offline   Reply With Quote
Old 07-13-2009, 08:32 PM   #4
09rexwagon
Scooby Specialist
 
Member#: 216135
Join Date: Jul 2009
Vehicle:
2011 Civic SI
STX #66, 06 S2000 STR 180

Default

Quote:
Originally Posted by Suby Noob View Post
I posted awhile back when I first purchased my vehicle because I was feeling a slight hesitation in first gear around 2500-3000 RPMs under normal driving conditions (ie. Not WOT). It felt as though the engine would just shut off for a split second. I was informed by the powers that be (Unabomber), that it had something to do with the Open Loop/Close Loop programming implemented in all 2006 vehicles and onward (minus one vehicle of the manufacturers choosing for each model year that obviously being the STI). It has something to do with emissions I believe. Anyways, I was wondering if it is possible to see what is going on from the logs below. I was hoping someone with more knowledge could decipher this log. I was also wondering why the fuel injectors basically cut out at around 4.5 seconds into the log. That was where I shifted, but I thought the injectors just dropped to 1 or 2 percent when shifting like they do under idle. My only guess when it comes to the hesitation is the 0 for Fuel Trim (Short) at 2.25 seconds. I dont understand what the difference is between Fuel Trim Short and Fuel Trim Long; if someone wanted to explain that, I would greatly appreciate it. If not, there is always the search button... Oh, and the vehicle has is running the stock map, no other mods. Just an AP v2 married to it. Thanks.



What scanner do you have that has a PID for turbo boost?
09rexwagon is offline   Reply With Quote
Old 07-13-2009, 09:01 PM   #5
Suby Noob
Scooby Specialist
 
Member#: 60890
Join Date: Apr 2004
Chapter/Region: South East
Location: O-Town
Vehicle:
1994 Toyota Pick-Up
2009 DGM WRX Sedan

Default

I am not following you. Are you talking about a PID for like programming? The OBDII interface that I have is the Cobb AccessPort v2. I think that is what you are asking.
Suby Noob is offline   Reply With Quote
Old 07-15-2009, 05:59 PM   #6
Suby Noob
Scooby Specialist
 
Member#: 60890
Join Date: Apr 2004
Chapter/Region: South East
Location: O-Town
Vehicle:
1994 Toyota Pick-Up
2009 DGM WRX Sedan

Default

Bump for a move to Engine Management forum please...
Suby Noob 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
09 WRX Hesitation - Logs Inside - Need Help Suby Noob AccessPort 6 08-03-2009 12:09 AM
09 WRX questions TuningIsLife Subaru Conversions 12 01-27-2009 03:21 AM
quick 09 wrx question Tony_Montana87 General Community 2 12-06-2008 03:45 AM
09 wrx question DCsubieSTI Newbies & FAQs 6 08-05-2008 06:45 PM
UTEC Questions - logs inside SloRice Engine Management & Tuning 4 08-01-2005 03:26 PM


All times are GMT -4. The time now is 12:45 PM.


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