Welcome to the North American Subaru Impreza Owners Club Friday March 5, 2021
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
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.







* 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 02-05-2021, 11:11 PM   #1
Chi_San
Scooby Guru
 
Member#: 53558
Join Date: Jan 2004
Chapter/Region: NWIC
Location: Deadford, OR
Vehicle:
2005 Baja Turbo
White/Silver/Black 3tone

Default Quick question about injector swapping

So, I've got a 2005 Baja with stock injectors, 535 Yellow Sidefeeds. The injectors are garbage. Not in general, the specific injectors I've got are garbage. I've already had to replace the left side injectors, #3 wasn't doing anything at idle, which fixed that... But I still am running lean at idle. All I was able to get was a set of Yellow sidefeeds from a totaled out Baja, and one broke while installing it, so I've basically got one spare. Subaru doesn't sell them brand new, and going with aftermarket modded sidefeeds just seems... Unreliable.

So, I've been kicking around the idea of getting some Top Feed TGV delete housings, some 560cc STI top feed injectors, a set of top feed fuel rails, and doing an upgrade.

My question is this: If I get top feed injectors from a specific year of STI, and I grab the stock map for said car, can I just copy pasta the injector scaling over into my 2005 ECU, and get it to run at least 'close enough' to use the ROMRaider injector scaling to get a good, safe injector setup? The "nearest tuner" to me is 300 miles away, which means it would cost around $1,000 just to tow the vehicle up there, plus another $500 to get a tune. I'm nowhere near done upgrading this thing, so it would potentially be a waste to have to do constant retuning at a tuner, when I can do most of this myself (and already have been doing so). I just don't have any experience messing with injectors, and I would rather not blow my motor up (yet).

Also, and I've goggled this, do the sidefeed and topfeed injectors all use the same harness connector? Or do I need to pick up a set of harness connectors and do some soldering?
* Registered users of the site do not see these ads.
Chi_San is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 02-06-2021, 05:54 AM   #2
alexmartynyuk
Scooby Specialist
 
Member#: 191967
Join Date: Oct 2008
Location: Vancouver
Vehicle:
2005 EVO VIII
@boost_reality

Default

You can borrow injector scaling and latency data and it should get you close as long as your intake has been scaled if it isn't stock. You can fine tune from there on logging your wideband. Also i'm not 100% sure but I do believe that the top and side feed injectors have the same plug and should plug right in.
alexmartynyuk is offline   Reply With Quote
Old 02-06-2021, 02:35 PM   #3
Chi_San
Scooby Guru
 
Member#: 53558
Join Date: Jan 2004
Chapter/Region: NWIC
Location: Deadford, OR
Vehicle:
2005 Baja Turbo
White/Silver/Black 3tone

Default

Quote:
Originally Posted by alexmartynyuk View Post
You can borrow injector scaling and latency data and it should get you close as long as your intake has been scaled if it isn't stock. You can fine tune from there on logging your wideband. Also i'm not 100% sure but I do believe that the top and side feed injectors have the same plug and should plug right in.
I've got an aftermarket MAF adapter, and despite it being a brandless EBay deal from back in 2005, it actually is scaled perfectly. On my WRX, adjusting the scaling resulted in... No changes. I also did so on the Baja, and it scales perfectly, so that's sorted.

Thanks for the info. I'm going to start heading forward with this plan, ordering TGV deletes and such as soon as my next trip is completed.
Chi_San 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 10:44 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2021 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.