Welcome to the North American Subaru Impreza Owners Club Thursday December 25, 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 > Engine Management & Tuning

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 06-23-2004, 12:05 AM   #1
ImportVenom
Scooby Specialist
 
Member#: 34204
Join Date: Mar 2003
Vehicle:
2004 WRX
WR Blue

Default Will Auxiliary Boost Controller fix Cobb AccessECU/AccessPort low boost issues?

Hey all, I emailed Trey about this a while ago but haven't gotten a response. The UTEC uses an auxiliary boost controller (ABC) to help reach desired boost levels. Is this something that those of us with AccessECU low boost issues should try out? Specifically, a friend has told me that the factory boost controller is not capable of reaching target boost levels in certain environments, such as high altitude.

Here's a NASIOC post I found about the ABC:

"I have a TurboXS Stage II kit (Unichip) and it uses an ABC (Auxiliary Boost Controller). The ABC is a bleed valve that allows the stock solenoid to hold higher boost. The Stage II Unichip was tuned for 16psi (or so I was told since TurboXS has not responded to my emails about the Unichip). IMO, the ABC's advantage over the MBC is that it will only produce full boost at WOT."

My main question is whether this would cause any problems with the Cobb ECU. It seems that the ABC was designed specifically for altitude and weather variations.
* Registered users of the site do not see these ads.
ImportVenom is offline   Reply With Quote
Old 06-23-2004, 01:14 AM   #2
RussB
Guest
 
Member#: 43667
Join Date: Sep 2003
Default

it would fix the problem, but it's probably not the best way to do it. Cobb offers HWG (higher wastegate duty cycle) maps for Stage 1 and Stage 2 AccessPort reflashes that will help you hit the boost target. That is probably the best way to go about it. The ABC will effectively increase the wastegate duty cycle, but it does it mechanically by bleeding off a little pressure.
RussB is offline   Reply With Quote
Old 06-23-2004, 01:22 AM   #3
ImportVenom
Scooby Specialist
 
Member#: 34204
Join Date: Mar 2003
Vehicle:
2004 WRX
WR Blue

Default

The problem is, the HWG maps don't seem to make much difference at all. Maybe 0.5 psi at most. But I am about 2 psi below the target boost levels. I also tried adjusting the wastegate arm actuator, and that didn't help either. I believe it's the elevation (6k) that is making the car not be able to hit target boost. Would an ABC be the solution, or a custom map from Cobb?
ImportVenom 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
Yet another Cobb 2.5 low boost issue eatsrice Engine Management & Tuning 10 08-29-2005 12:16 PM
Ultimate fix for Cobb stage 2 low boost problem... WRXVII Engine Management & Tuning 37 07-31-2004 04:44 AM
Cobb stage 2 low boost problem - anyone found a fix yet? txl146 Engine Management & Tuning 11 05-28-2004 01:34 AM
Cobb stage 2 low boost problem - let's put this to an end! READ THIS! txl146 Engine Management & Tuning 1 05-23-2004 11:56 AM
cobb stage 2 low boost CrashN2mee Engine Management & Tuning 15 03-10-2004 12:03 PM


All times are GMT -4. The time now is 03:33 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.