Welcome to the North American Subaru Impreza Owners Club Thursday July 10, 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 > Pre-2002 Factory Turbo Powertrain

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 02-15-2010, 10:28 PM   #1
hpg88
Scooby Newbie
 
Member#: 62677
Join Date: May 2004
Location: brattleboro, vermont
Vehicle:
1995 impreza
green

Default 94 Jdm Ej20g Ecu Pinout

can anyone on here please help me. i really need a ecu pinout for a 94 jdm ej20g. i just swapped my motor and im not getting any spark. please let me know if u have any info.
* Registered users of the site do not see these ads.
hpg88 is offline   Reply With Quote
Old 02-15-2010, 10:57 PM   #2
azn0boi04
Scooby Specialist
 
Member#: 164172
Join Date: Nov 2007
Chapter/Region: NWIC
Location: Covington, WA
Vehicle:
97 OBS EJ20G ZILLA
87 GL

Default

whats your ecu code.. 4 plug right? give me your email and ill send it
azn0boi04 is offline   Reply With Quote
Old 02-15-2010, 11:04 PM   #3
69subaru360
Scooby Guru
 
Member#: 159682
Join Date: Sep 2007
Chapter/Region: NESIC
Location: Maine
Vehicle:
1995 WRX
1998 2.5 RS

Default

http://www.vwrx.com/electrical/95%20...g%20Charts.xls

This one is easy to read. Rob has a good one as well.
69subaru360 is offline   Reply With Quote
Old 02-15-2010, 11:06 PM   #4
azn0boi04
Scooby Specialist
 
Member#: 164172
Join Date: Nov 2007
Chapter/Region: NWIC
Location: Covington, WA
Vehicle:
97 OBS EJ20G ZILLA
87 GL

Default

Quote:
Originally Posted by 69subaru360 View Post
http://www.vwrx.com/electrical/95%20...g%20Charts.xls

This one is easy to read. Rob has a good one as well.

isnt that for the ej20k? or are the ecu basically the same..
azn0boi04 is offline   Reply With Quote
Old 02-15-2010, 11:17 PM   #5
69subaru360
Scooby Guru
 
Member#: 159682
Join Date: Sep 2007
Chapter/Region: NESIC
Location: Maine
Vehicle:
1995 WRX
1998 2.5 RS

Default

Quote:
Originally Posted by azn0boi04 View Post
isnt that for the ej20k? or are the ecu basically the same..
No it's a G and the ecu is not the same.
69subaru360 is offline   Reply With Quote
Old 02-16-2010, 01:01 AM   #6
suberdave
NASIOC Supporter
 
Member#: 101865
Join Date: Nov 2005
Chapter/Region: NWIC
Location: Covington, WA
Vehicle:
88 GL-10 STi
silver

Default

this is what i have...

EJXXX ECU pinouts.xls

EJ20G JDM UK.pdf

-=Suberdave=-
www.suberdave.com
suberdave is online now   Reply With Quote
Old 03-14-2010, 08:12 PM   #7
Perennialphil
Scooby Newbie
 
Member#: 241020
Join Date: Mar 2010
Default

Hello there everyone!

Well, I have an EJ20X, X being an unknown atm. I know it's a JDM 94 WRX turbo and the ECU has three yellow plugs, with 16, 22 and 26 pins respectively. From the pinouts I've looked at, it most closely resembles the EJ20K in Suberdave's "EJXXX ECU pinouts.xls" file. I've identified all the wires where the three plugs enter the ECU, but I'm wondering what the "XXX"'s are in the pinout. For example connector B135 pin6-7 and 11-13, connector B136 pin 15 and Connector 137 pin 4-5, 16, 18-19, 22-23. If anyone can help me and shed some light I'd be much obliged.

I've yet to trace the wires to their appropriate ends in the engine, dash, or other parts of the harness as I'm pretty much ignorant on the subject and am learning ALL about 1) Electrical wiring (diagrams and theory/application) 2) Automobiles/maintenance/well everything car related. Simply, I'm not there yet but from what I can see so far, it doesn't even look like the end of the wires I have which connect to the ECU go anywhere on the engine... I have a funny feeling the harness comes from a different engine than the one I have... Some wires seem to be missing and some are spliced in odd ways with other wires which, according to my engineering friend, does not really make any sense. So we think someone tampered with the harness before I got it. The vendor should be contacting me in the next couple of days to shed some light on *those* subjects.

The engine is going into a 1985 A/T Westfalia camper btw... so if anyone has any extra help, feel free :-), I appreciate all advice, tips etc.

Phil
Ottawa, Ontario, Canada
Perennialphil is offline   Reply With Quote
Old 03-14-2010, 08:42 PM   #8
69subaru360
Scooby Guru
 
Member#: 159682
Join Date: Sep 2007
Chapter/Region: NESIC
Location: Maine
Vehicle:
1995 WRX
1998 2.5 RS

Default

A 94 WRX is an EJ20G and should have a 4 plug ecu. If your ecu is a 3 plug it might be from an EJ20K. Best thing to do is post pics of your engine and the code on the ECU and somebody here will tell you what you have from that.
69subaru360 is offline   Reply With Quote
Old 03-16-2010, 01:36 PM   #9
Perennialphil
Scooby Newbie
 
Member#: 241020
Join Date: Mar 2010
Default

Hullo everyone,

Ok, so some pics of my engine... I can't attach on here and I tried to attach them on VWRX.com, but that just gives me the message "sending request to www.vwrx.com..." and nothing happens. I'm not sure if I can post my email on this forum... but perennialphil@gmail.com. The shiny "nice looking engine" pics I will send you are the ones the vendor sent to me, the others are the recent ones I've taken. If you notice any discrepancies which don't include missing MAF piece, intercooler and fuel hoses or other hoses, feel free to point them out.
The numbers on the ECU in case you can't read them are, from top left to bottom right: 4G, 226 11 AC560, A 18-000 DH7, 6916.
I'm not sure if the "1"'s are 1's or some kind of separation like "|".
Hope this helps you help me! Let me know if any other info is needed.

Phil
Perennialphil is offline   Reply With Quote
Old 03-16-2010, 01:40 PM   #10
69subaru360
Scooby Guru
 
Member#: 159682
Join Date: Sep 2007
Chapter/Region: NESIC
Location: Maine
Vehicle:
1995 WRX
1998 2.5 RS

Default

Host your pics on a site like photobucket and then use [img][/img] tags to post them on here. If you can't figure it out pm me and you can email them to me and I'll post them for you.
69subaru360 is offline   Reply With Quote
Old 03-16-2010, 02:26 PM   #11
Perennialphil
Scooby Newbie
 
Member#: 241020
Join Date: Mar 2010
Default Sweet!

Here's the link let me know if it works or not.

http://pbckt.com/sS.SLh
Perennialphil is offline   Reply With Quote
Old 03-16-2010, 03:06 PM   #12
ROentje
Scooby Newbie
 
Member#: 162452
Join Date: Oct 2007
Chapter/Region: International
Location: Curacao, N.A.
Vehicle:
2002 JDM V7 STi
blue

Default

just so you know the pics work.
Engine looks like ej20G.(as far as my knowlege goes).

Don't have pinout.
ROentje is offline   Reply With Quote
Old 03-16-2010, 03:08 PM   #13
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

Ej20H twin turbo. Looks like a bunch of your vacuum hardlines have been cut as well. That thing is going to be a beast to get to run right. With the damage I suggest you convert it over to single turbo and run it like it's an Ej20G or EJ20K.
Matt Monson is offline   Reply With Quote
Old 03-16-2010, 03:24 PM   #14
Perennialphil
Scooby Newbie
 
Member#: 241020
Join Date: Mar 2010
Default

EJ 20 H twin turbo? You sure? Ok so will the ecu I have work for it? I talked to the vendor today and he told me it was from *that* engine. If it is
an H twin, there would be 4 plugs for the ecu right?
Perennialphil is offline   Reply With Quote
Old 03-16-2010, 04:01 PM   #15
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

Does it have two downpipes? Does it have two turbos? Twin turbo.

It could be an Ej20R. I didn't look all that closely, and couldn't tell you how many plugs either of them has. But that's not Ej20G. I know that for sure.
Matt Monson is offline   Reply With Quote
Old 03-16-2010, 05:22 PM   #16
Perennialphil
Scooby Newbie
 
Member#: 241020
Join Date: Mar 2010
Default

Would the ecu I have work?
Perennialphil is offline   Reply With Quote
Old 03-16-2010, 05:47 PM   #17
elislider
Scooby Specialist
 
Member#: 133923
Join Date: Dec 2006
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
03 Legacy GT wagon
I love goooollllllllddddd

Default

Info I found says its an EJ20R, 1997 probably. and what Matt said is accurate, that with all that bastardized wiring and things cut here and there, you're in for a lot of giant headaches trying to get it to work. ESPECIALLY if youre planning on swapping into a LHD car. You could convert it to single turbo, i would recommend getting an ej20k or late ej20g wiring harness with the same style of 3-plug ecu. you wouldnt be able to use the EJ20R ECU with a single turbo setup, at least i doubt you could
elislider is offline   Reply With Quote
Old 03-16-2010, 06:01 PM   #18
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

I'm not so sure that the ECU needs to be tossed. Most of the turbo control between the two turbos on that engine is vacuum based. I don't think the electronics are that involved other than on fuel and timing. I suspect it could be managed with a boost controller.

It's been a long time since I've looked there, but the RS Liberty forum in Australia used to have a few good write ups of guys converting their TT's over to single turbo. The other forum you might look at would be SIDC in the UK. Overseas is where you'll find the expertise on the twin to single turbo conversion.
Matt Monson is offline   Reply With Quote
Old 03-16-2010, 06:40 PM   #19
69subaru360
Scooby Guru
 
Member#: 159682
Join Date: Sep 2007
Chapter/Region: NESIC
Location: Maine
Vehicle:
1995 WRX
1998 2.5 RS

Default

That is quite the mess you bought. I'd agree, convert it to single turbo. For a VW van, you might want to look into an aftermarket standalone ECU and make up a new harness with just the basics to run it. Megasquirt or something similar might work out ok.
69subaru360 is offline   Reply With Quote
Old 03-16-2010, 09:12 PM   #20
sgm_sti
Scooby Newbie
 
Member#: 241381
Join Date: Mar 2010
Default

bumpp
sgm_sti is offline   Reply With Quote
Old 03-16-2010, 10:57 PM   #21
Perennialphil
Scooby Newbie
 
Member#: 241020
Join Date: Mar 2010
Default

Thanks a million folks for the replies. Lots of help. I'll have a look at those forums and see what I can learn. A friend of mine did mention I might want to take a look at megasquirt...

So, to be specific, what is the mess I'm looking at? As I menionned earlier, I'm kind of new to the automotive world... What can you all see that's missing or that I would need? I've been talking with a guy from a motorsport outfit who told me the following today:

"the system we use is EMS, the model would be the Stinger, The ecu, harness, igniter and base map is $1500. it will plug on and run right away, it will need some final tuning and is laptop friendly and easy to use. We build these units daily, we do run them in open loop (that means we do not use an oxygen sensor, they do have provisions to do that if requested. it will run off of all your stock sensors and has a dedicated Subaru mode so nothing has to be done with the crank or cam sensor. you can check out the software at www.fuel-injection.com* we are the US west division, also it does not need a MAF to run the engine, it uses a MAP sensor instead"

So, 1500 seems like a lot when a megasquirt unit can be had for 250-400$ ish? The harness... I've been working on mine and it seems dooable, and I understand if I go megasquirt I need to build my own harness right? If I do that, what about the O2 sensor and maf/map. Thing is I don't know which way to go and what combination of things I need to do to make this work. I know I need a maf or a map, but which would work best?What about O2 sensor? Do I need one?

Again, thank you all very much for your help, I appreciate it very much. I'm learning and enjoying it... Problem is time a money both of which I have little of... Gotta on the road in one month, and I have about 2000k before I'm tapped out/broke as... Well...

Phil
Perennialphil is offline   Reply With Quote
Old 03-16-2010, 11:11 PM   #22
69subaru360
Scooby Guru
 
Member#: 159682
Join Date: Sep 2007
Chapter/Region: NESIC
Location: Maine
Vehicle:
1995 WRX
1998 2.5 RS

Default

By mess, we mean the hacked up wiring and the twin turbos. The twins don't have a very good reputation. You must have talked to outfront motorsports. I've dealt with them twice and they seem to know what they are doing.
69subaru360 is offline   Reply With Quote
Old 03-16-2010, 11:12 PM   #23
Perennialphil
Scooby Newbie
 
Member#: 241020
Join Date: Mar 2010
Default

Ok some research I've done here :http://en.m.wikipedia.org/wiki/Oxyge...edirected=true suggest I want an O2 sensor and a closed loop... Now, do I want to work with the harness and ecu I have now or get megasquirt? I have a month and very little "credit" left on my credit card ;-). All brainstorming is appreciated! Thanks :-)
Perennialphil is offline   Reply With Quote
Old 03-17-2010, 03:49 AM   #24
elislider
Scooby Specialist
 
Member#: 133923
Join Date: Dec 2006
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
03 Legacy GT wagon
I love goooollllllllddddd

Default

most standalone ECU replacements do not actively use the O2 sensor for feedback while running (whereas the stock ecu does, under average driving, ie. closed loop, and not when you are under moderate to heavy throttle, ie. open loop). an O2 sensor (wideband) is traditionally used for tuning so that it is known what values of AFR (air to fuel ratio) result from the different combinations of load/rev/fuel/ignition timing/injector duty/etc., and that can be used as a baseline for making the injector map. knock values are traditionally logged and used to make the ignition timing map as well.

also if you are curious, here is a neat site i found for all the jdm legacy models
http://homepages.ihug.co.nz/~ccgrant/leggymodels.htm
yours right there in the middle of the BD/BG section:
Code:
        BD5
	RS
	BD5B48D
	B type(06/96-07/97)
	MT
	4G
	205
	EJ20RDWCJE

        BG5
	GT-B
	BG5B5CD
	B type(06/96-07/97)
	MT
	4G
	205
	EJ20RDWCJE
elislider is offline   Reply With Quote
Old 03-17-2010, 09:10 AM   #25
Perennialphil
Scooby Newbie
 
Member#: 241020
Join Date: Mar 2010
Default

Ok so this morning I looked for a VIN. The only two markings I could find on the engine were EJ20 (under the alternator) and 727491, which was on top under where the intercooler would be, between the 2 turbos and just above where the tranny and engine meet. Anyone know if I can use that 6 digit number to find out what happened to this car before I bought it?
Perennialphil 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
JDM forester ECU pinout 02SKReX Pre-2002 Factory Turbo Powertrain 17 10-21-2013 06:56 PM
need: SMJ foldout page for 94 JDM EJ20G (plug R1) supermoose Subaru Conversions 1 02-25-2013 06:38 PM
Need: SMJ foldout page for 94 JDM EJ20G (plug R1) Please! chrisc1991 Subaru Conversions 1 01-20-2009 09:28 AM
EJ20G ECU pinouts smacksube Subaru Conversions 5 12-18-2003 03:07 PM
97 JDM WRX ECU pinouts Subie2 Subaru Conversions 3 07-09-2003 04:05 PM


All times are GMT -4. The time now is 10:35 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.