Welcome to the North American Subaru Impreza Owners Club Thursday March 28, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Subaru Conversions

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 02-12-2021, 04:29 PM   #1
Bluebieru
Scooby Newbie
 
Member#: 520461
Join Date: Nov 2020
Location: Toronto
Vehicle:
2004 WRX
Silver

Default Sti ecu with wrx engine?

So i have an ecu from a 2001 jdm sti (V7) and im planning to buy a jdm ej205. Im wondering if they will work because the ej205's have tgvs while the 3j207 (the engine that the V7 sti ecu was designed for) does not. I know a missing or messed up tgv signal can stop the car from starting so im not to sure how the wiring will sync up between these 2 parts. If anyone can let me know or send a link to research id appreciate that.

BTW: Im swapping these into a 2004 usdm wrx chassis
* Registered users of the site do not see these ads.
Bluebieru is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 02-12-2021, 08:49 PM   #2
snow_bound26
Scooby Specialist
 
Member#: 395793
Join Date: Jul 2014
Chapter/Region: Tri-State
Location: SLC and Lake Placid
Vehicle:
2005 92x Aero
Beige

Default

It's my JDM 205 and 207 didn't have TGVs and I repurposed the wires for AVCS. When I use my USDM ECU once a year I don't have any problems. It's just tuned out. While you have everything apart might be worth it to just do a TGV delete.

If you want to use the TGVs then you have a couple choices. If you are using AVCS then you can add in the wires. The pins are there ready to be tapped. If you're not using AVCS then you can re-pin the AVCS wires to the TGV pins. Your tuner will end up downloading the proper EJ205 rom onto the ECU for that engine. So essentially they will be turning the ECU into a 205 ECU. My 207 is being run on a 205 ECU with the proper 207 ROM flashed onto it for instance.
snow_bound26 is offline   Reply With Quote
Old 02-12-2021, 09:21 PM   #3
Bluebieru
Scooby Newbie
 
Member#: 520461
Join Date: Nov 2020
Location: Toronto
Vehicle:
2004 WRX
Silver

Default

Ok as long as the pinout at the ecu and the chassis/engine harness is the same, I don't want to accidentally brick my ecu. Thanks
Bluebieru is offline   Reply With Quote
Old 02-12-2021, 10:54 PM   #4
Bansheeboy11
Scooby Specialist
 
Member#: 182415
Join Date: Jun 2008
Chapter/Region: Tri-State
Location: New York
Vehicle:
1999 RS
Aspen White

Default

Yes it will work but you'll need to reflash the ecu and turn off your TGV codes
Bansheeboy11 is offline   Reply With Quote
Old 02-13-2021, 10:55 AM   #5
Bluebieru
Scooby Newbie
 
Member#: 520461
Join Date: Nov 2020
Location: Toronto
Vehicle:
2004 WRX
Silver

Default

1 last question, so it's possible to have both tgv's and avcs active? I'm not going for a high power build and I like tgv's if I can use them with avcs that would be the best
Bluebieru is offline   Reply With Quote
Old 02-13-2021, 02:57 PM   #6
snow_bound26
Scooby Specialist
 
Member#: 395793
Join Date: Jul 2014
Chapter/Region: Tri-State
Location: SLC and Lake Placid
Vehicle:
2005 92x Aero
Beige

Default

Yes you can have both. TGVs are only used during cold start and eventually the motors will need replacing so Maoist people just delete them unless they live somewhere where they can't get around emissions check. If you don't have to worry about an emissions check then delete them so you don't have to worry about the motors failing
snow_bound26 is offline   Reply With Quote
Old 02-20-2021, 04:40 PM   #7
Bluebieru
Scooby Newbie
 
Member#: 520461
Join Date: Nov 2020
Location: Toronto
Vehicle:
2004 WRX
Silver

Default

Also does anyone have pinouts for the avcs needed for this engine swap?
Bluebieru is offline   Reply With Quote
Old 03-02-2021, 01:48 PM   #8
ameer22
Scooby Newbie
 
Member#: 499869
Join Date: Apr 2019
Default need help with my link ecu

i got a link g4+ when conected it 2 the car rpm gauge didnt work anyone have an idea at what might be the problem? we tried 2 get it 2 work but no use
ameer22 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 06:15 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.