How to: install a 4 channel ECU

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bmxkelowna
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Re: How to: install a 4 channel ECU

Post by bmxkelowna »

so the harness side of #3 and #4 are not used and the ecu side of map gnd is not used too right?
also both red wires, 1 out and 3 out connect to #1&2 on the harness side
and both blue wires, 2 out and 4 out connect to #3&4 on the harness side right?

if so then all im waiting for is my ecu to get in then i can send it to rob!
Florin1
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Re: How to: install a 4 channel ECU

Post by Florin1 »

Logan, why dont you just skip that whole rewiring biz and just convert to COP like me :D? It was very simple, and from the looks of it, i got a more intense spark then what my coil pack used to do.
1994 Legacy Sport Sedan.
1991 Legacy Sport Sedan.
bmxkelowna
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Re: How to: install a 4 channel ECU

Post by bmxkelowna »

because this is cheap and easy and ive already got it done just wanted to double check that it was all right.
have you got your 20g ecu yet?
PhyrraM
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Re: How to: install a 4 channel ECU

Post by PhyrraM »

bmxkelowna wrote:so the harness side of #3 and #4 are not used and the ecu side of map gnd is not used too right?
Yup.
also both red wires, 1 out and 3 out connect to #1&2 on the harness side
and both blue wires, 2 out and 4 out connect to #3&4 on the harness side right?
I don't have one in front of me right now, but that sounds correct. I made a mistake in the original, but it should be correct as of now. You may need to read the text of my post to be sure.
'93 Winestone SS Auto, '91 Pearl White SS.
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bmxkelowna
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Re: How to: install a 4 channel ECU

Post by bmxkelowna »

awesome thanks man, ya i had the 1out and 2out to the #1&2 at first then read a little deeper into your post.

offtopic, jegs maf is just ground both sides of the blue wire?
Florin1
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Re: How to: install a 4 channel ECU

Post by Florin1 »

bmxkelowna wrote:because this is cheap and easy and ive already got it done just wanted to double check that it was all right.
have you got your 20g ecu yet?
Oh yeah, I've had mine in for like 2 months now i think.
1994 Legacy Sport Sedan.
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PhyrraM
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Re: How to: install a 4 channel ECU

Post by PhyrraM »

bmxkelowna wrote:awesome thanks man, ya i had the 1out and 2out to the #1&2 at first then read a little deeper into your post.

offtopic, jegs maf is just ground both sides of the blue wire?
I didn't make any changes to the MAF wiring. I believe you only have to make changes if you wish to run the JECS with the EJ22T ECU.
'93 Winestone SS Auto, '91 Pearl White SS.
'93 Pure White SS EJ20G slanty intercooled, SIDESWIPED! In stasis.
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bmxkelowna
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Re: How to: install a 4 channel ECU

Post by bmxkelowna »

oh perfect now if only my 20g would come in the mail! haha
bmxkelowna
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Re: How to: install a 4 channel ECU

Post by bmxkelowna »

hey PhyrraM thanks for this write up! got my ecu today so i was able to try it out and it works perfect
Florin1
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Re: How to: install a 4 channel ECU

Post by Florin1 »

Logan, where did u get your ecu? The link i gave you? Or elsewhere?
1994 Legacy Sport Sedan.
1991 Legacy Sport Sedan.
bmxkelowna
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Re: How to: install a 4 channel ECU

Post by bmxkelowna »

ya i got it from clean 93 on nasioc, thanks man
JDMSLIK
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Re: How to: install a 4 channel ECU

Post by JDMSLIK »

So i'm just in the process of wiring this up. Quick question:

I got one ignitor and plug sitting in one of my parts boxes out in the garage. Can I just cut off my current ignitor on the car and use that near the ecu. SO the question is can and how do I bypass the current ignitor just by joining the harness wires and avoid gutting the current ignitor?
Thx eh
PhyrraM
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Re: How to: install a 4 channel ECU

Post by PhyrraM »

IIRC, The ignitor is maked with the ins and outs. Just match them up properly when cutting out the connector.
'93 Winestone SS Auto, '91 Pearl White SS.
'93 Pure White SS EJ20G slanty intercooled, SIDESWIPED! In stasis.
'94 FWD and '95 AWD Laguna Blue SVXs.
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DevC
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Re: How to: install a 4 channel ECU

Post by DevC »

Now done on my car, works great, thanks for the writeup!!!
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Ghost
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Re: How to: install a 4 channel ECU

Post by Ghost »

PhyrraM, thanks for the write up. If you still remember, would you mind providing your source for the patch harness? I'm not too familiar with them and I would like to be sure I get the correct one.
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Re: How to: install a 4 channel ECU

Post by cj91legss »

Gc8 wrx on ebay. Make sure it has 4 plugs

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mike-tracy
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Re: How to: install a 4 channel ECU

Post by mike-tracy »

PhyrraM wrote:Here is a list of cars with the same ECU connectors as the Legacy. This list can be used to search for patch harnesses, harness side connectors/wires/pins, or cheap ECUs to disect for male ECU connectors.

91-01 ACURA NSX (MAIN ECM CONN ONLY)
94-96 DODGE STEALTH
94-97 MITSUBISHI 3000GT
00-05 MITSUBISHI ECLIPSE 2.4 MANUAL
96-99 MITSUBISHI ECLIPSE TURBO
03-05 MITSUBISHI LANCER EVO VIII US MODEL
96-98 EAGLE TALON TSI
96-97 LEXUS LX450
93-95 MAZDA RX-7
97-98 SUBARU FORESTER
92-96 SUBARU IMPREZA EJ20G
90-94 SUBARU LEGACY EJ20G
93-96 SUBARU LEGACY EJ20H
1996 TOYOTA 4RUNNER 4CYL AUTOMATIC
97-98 TOYOTA 4RUNNER 4CYL
96-97 TOYOTA LAND CRUISER
95-98 TOYOTA T-100 4CYL
95-97 TOYOTA T-100 V6 MANUAL
95-97 TOYOTA TACOMA 3RZ AUTOMATIC
95-97 TOYOTA TACOMA V6
1992 Legacy SS 5mt, build in progress
Josh Colombo wrote: Mon Jan 14, 2002 10:23 am Wait....I'm confused now.
stef1825
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Re: How to: install a 4 channel ECU

Post by stef1825 »

would this also work with 1 hitachi unit (stock one) and a 1 diamond GB-003? instead of both hitachi units?
Basically; is the 22438AA030 dis4-03 ignitor interchangeable/same as the diamond J142/GB-004 (later model n/a)?
Legacy777
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Re: How to: install a 4 channel ECU

Post by Legacy777 »

I would guess it should be interchangable.
Josh

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jessman1942
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Re: How to: install a 4 channel ECU

Post by jessman1942 »

Hi if it helps i got my two ignitor's ! One is from a 93 legacy and one from a 95 impreza they seem to be the same. My only question is doing this conversion harness to run a 20g ecu on my 91 ss will this all i really need to do to properly run my ej20g swap
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CHECK OUT MY ej20G BUILD HERE>> viewtopic.php?f=25&t=53766
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Re: How to: install a 4 channel ECU

Post by Legacy777 »

Are you planning to keep the stock ignition coil or convert to individual ignition coils?
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SILINC3R
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Re: How to: install a 4 channel ECU

Post by SILINC3R »

Ok so for some reason I am having trouble understanding how to install the 4 channel ignitor to the ECU. Obviously it isn't hard because everyone is doing. The diaghram shows 2 ignitors and not just the one 4 channel.
So one side should go to the ECU and one side to the coil. I understand that

And here is a picture of my EJ20 4 channel ignitor that I would like to install. 4 pins on one side 5 on the other.
Image

After searching more I found this thread and it may have helped me out. Here

so the 4 wires will represent (COIL) Pin 9 and 10, So wires 1&3 will go to pin 9 and 2&4 to pin 10 on coil side?

the 5 pin side (ECU) has the black/ground, red/power, yellow/green/ 1&3 Pin7&9?, green/white 2/4? Pin8&10, and then the 5th wire isn't used.

Now the yellow/green and green/white will both have to be split to create 4 wires?

How does that sound?

Or is it possible I am looking at the ignitor backwords and 4 side is ECU and 5 side is COIL? Which now that I think about it probably makes more sense.
Tony
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Re: How to: install a 4 channel ECU

Post by Legacy777 »

Tony, I'll have to look at the wiring diagrams when I get home. I didn't see anything in that thread.
Josh

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lor
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Re: How to: install a 4 channel ECU

Post by lor »

Maybe somebody need in the future help to this metal ignitor.
Part no. is 22438AA060
Used with coil which is integrated into the spark plug.
(one ignition coil per cylinder)
http://jp-carparts.com/subaru/part_deta ... 22438AA060
And the working schema is the following:
input: five wire from the ecu the no. 5 is the common ground (common emitter) for the four transistor.
the other four is the basis for the four transistor
output: four wire to the four ignition coil. (this is the collectors of the transistor)
Image
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Legacy777
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Re: How to: install a 4 channel ECU

Post by Legacy777 »

Thanks for the diagram!
Josh

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1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm
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