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adapting a EJ20g Robtune to a 1993 SS
Posted: Thu Apr 24, 2014 3:31 am
by xbmxxx
I am going over this thread reading about ignition converters
http://bbs.legacycentral.org/viewtopic.php?f=19&t=47252
However, I have a JDM 20G intake manifold complete with the COP ignition. Will this intake plug in to my harness and not need an ignition converter?
Re: adapting a EJ20g Robtune to a 1993 SS
Posted: Thu Apr 24, 2014 4:15 am
by Legacy777
To my knowledge the stock SS wiring harness does not have the extra wires for the COP setup. You also need a four channel igniter and would need to run two extra wires from the ECU to the igniter, and then run the wiring from the igniter to the COP.
Re: adapting a EJ20g Robtune to a 1993 SS
Posted: Thu Apr 24, 2014 5:51 am
by wtdash
Hi,
Get the Ignition converter from Rob and you can run either an EJ22T or EJ20G ECU, per Rob. And you'll need the matching parts for the ECU - injectors, MAF, etc. and make the minor wiring changes (noted in my Thread) if it's the EJ20G ECU.
But you don't need the extra COP wiring or igniters.
TD
Re: adapting a EJ20g Robtune to a 1993 SS
Posted: Thu Apr 24, 2014 6:23 am
by robertpaige
Rob's converter is honestly the cleanest way to go.
Re: adapting a EJ20g Robtune to a 1993 SS
Posted: Thu Apr 24, 2014 11:08 am
by James614
I did the COP conversion, and while it wasn't that hard, if I did it again I'd go with the ignition converter honestly.
If you do want to run COP, I'd strongly recommend getting 02-05 WRX coil packs which allow you to bypass the ignitor entirely. This is actually much easier than trying to tie the stock 4ch ignitor into the system without a complete harness. Hell, I had a complete harness and and t was still easier to run the GD coils.
Re: adapting a EJ20g Robtune to a 1993 SS
Posted: Tue Sep 23, 2014 5:02 am
by jessman1942
James614 wrote:I did the COP conversion, and while it wasn't that hard, if I did it again I'd go with the ignition converter honestly.
If you do want to run COP, I'd strongly recommend getting 02-05 WRX coil packs which allow you to bypass the ignitor entirely. This is actually much easier than trying to tie the stock 4ch ignitor into the system without a complete harness. Hell, I had a complete harness and and t was still easier to run the GD coils.
is their a guide to this conversion anywhere using GD coils?
Re: adapting a EJ20g Robtune to a 1993 SS
Posted: Tue Sep 23, 2014 11:29 am
by James614
Here's Rob's writeup explaining how to do it on his Impreza RS with an EJ20G swap:
http://forums.nasioc.com/forums/showthr ... ?t=1192028
EDIT: Kimo wrote a very good writeup that's specific to our cars:
http://bbs.legacycentral.org/viewtopic.php?f=19&t=53990