Welcome to the North American Subaru Impreza Owners Club Thursday April 18, 2019
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 04-09-2019, 01:49 PM   #501
mrsaturn7085
Scooby Specialist
 
Member#: 375462
Join Date: Dec 2013
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
2006 Impreza WRX STI
WR Blue

Default

Quote:
Originally Posted by jigga View Post
Thanks for the response

To answer your question, the answer is "both". I do have a standalone running the car most of the time, but my stock ECU does have to go back in occasionally for emissions purposes (and will have to go back into the car in a few weeks again actually), hence part of the desire to keep the stock FPC in the loop.

As is now, I can switch the stock ECU back in easily by just plugging it in and it is able to run the primary pumps on the car without issue, as it can power up the relay running the primary pumps, and run them at a constant speed.
I understand the issue - personally, I just register my car in a rural area at a family member's address. As long as you store the vehicle there now and then (and can reliably receive mail there), the DMV should allow it. I would NOT do this at an out-of-state address or a friend's address.

However - to continue with your current process, you can pull this off by sourcing a second FPC and making a jumper harness out of the 8 inch sub-harness it comes with.

A good trick to make sure you never mess this up is to make the standalone trigger the fuel pump relay using an opposite electrical signal when compared to the OEM ECU. For example:

If the stock ECU is sending a 5V 'enable' signal to the FPC (common to most 32-bit Subaru models), you set the relay up to close when the ECU sends a grounding signal.

-or-

If the stock ECU is sending a ground 'enable' signal to the FPC (which is how SOME 16-bit Subaru models work), you set the relay up to close when the ECU sends a 12V signal.

Side note - the 5V-active controllers WILL accept a 12V signal without any issue. I did it for years on a 2006 STI using a MoTeC M800 before converting to a relay.
* Registered users of the site do not see these ads.
mrsaturn7085 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 04-12-2019, 07:17 PM   #502
jdarrow12
Scooby Newbie
 
Member#: 465527
Join Date: Apr 2017
Chapter/Region: SCIC
Location: fullerton
Vehicle:
2006 wrx sti

Default

dw sells a hardwire kit for $35, but not sure how it would compare to a homemade option
jdarrow12 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 06:26 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2019 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.