Welcome to the North American Subaru Impreza Owners Club Monday September 25, 2017
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
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 09-02-2017, 07:11 PM   #1
Scoobyfan09
Scooby Newbie
 
Member#: 471513
Join Date: Jul 2017
Default Boost creep after turbo port, now what?

09 wrx
New rebuilt vf52
Perrin divorced catted dp
Invidia q300
Cobb stage 2 Lwg ots

So after installing my turbo back system and new turbo, I've had really bad boost creep in all gears (I logged 23 pounds peak in 2nd gear). I just finished porting my turbo, and now I'm only creeping in 3rd(peak 20.5), 4th, and 5th gear. Is it possible that I just didn't port it enough? What are my options? I'm not ready to go to an ewg. Even if I can only get it to where it doesn't creep until higher up in 4th I'd be happy. Thanks
* Registered users of the site do not see these ads.
Scoobyfan09 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 09-06-2017, 02:58 AM   #2
technica
Scooby Newbie
 
Member#: 72938
Join Date: Oct 2004
Chapter/Region: MWSOC
Location: Chicago area
Vehicle:
16 STI
Black

Default

You might want to try some stiffer springs, to make up for the extra volume of air.
technica is offline   Reply With Quote
Old 09-06-2017, 10:21 AM   #3
lowbee
Scooby Newbie
 
Member#: 254317
Join Date: Aug 2010
Location: Toronto, Canada
Vehicle:
2011 STi

Default

Get a pro-tune
lowbee is offline   Reply With Quote
Old 09-06-2017, 12:22 PM   #4
Zcypot
Scooby Newbie
 
Member#: 372777
Join Date: Nov 2013
Chapter/Region: SCIC
Location: Compton, CA
Vehicle:
2014 WRX Sedan Lmtd
WRB

Default

Didn't see you mention you got tuned, you completely changed the flow of the turbo, pro tune before you lean out and boom.
Zcypot is offline   Reply With Quote
Old 09-06-2017, 12:33 PM   #5
wrxlaunch
Scooby Specialist
 
Member#: 181298
Join Date: May 2008
Chapter/Region: MAIC
Location: MAIC
Vehicle:
2015 WRX Limited
Lightning Red

Default

EBCS recommended also
wrxlaunch is offline   Reply With Quote
Old 09-06-2017, 01:23 PM   #6
mrsaturn7085
Scooby Specialist
 
Member#: 375462
Join Date: Dec 2013
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
2006 Impreza WRX STI
WR Blue

Default

23 psi in second gear is not boost creep - you have a mechanical issue.

Did you mess with the wastegate actuator arm at all?
Did you ensure the wastegate is physically able to fully open into the bell mouth?
Did you install a EBCS and just run it on the OTS Cobb map?

Any one of these things can cause your problem, but boost creep is not one of them.
mrsaturn7085 is offline   Reply With Quote
Old 09-11-2017, 07:51 PM   #7
Black94Snake
Scooby Specialist
 
Member#: 274499
Join Date: Feb 2011
Chapter/Region: NESIC
Location: RI
Vehicle:
1994 5.8T Cobra
755rwhp @ 16psi

Default

ill never understand why people try to solve tune related issues, when they have an OTS map.

Especially with mods that arent covered by such.
Black94Snake 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 04:53 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2017 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.