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Old 09-18-2013, 05:05 PM   #326
makipsee
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u have to first determine if the coils u have, have built in ignitors.. if they do then u have to bypass the ignitor and run the right trigger wires to each coil pack (1 trigger wire will go to 2 coil packs)
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Old 11-10-2013, 02:38 PM   #327
djsloanedollas
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Can anyone confirm that this would be a suitable ignition coil to do a conversion on a '93 wrx?

http://www.ebay.com/itm/IGNITION-COI...-/251157699893

Thanks!
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Old 11-11-2013, 11:26 PM   #328
ltizzy
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Quote:
Originally Posted by djsloanedollas View Post
Can anyone confirm that this would be a suitable ignition coil to do a conversion on a '93 wrx?

http://www.ebay.com/itm/IGNITION-COI...-/251157699893

Thanks!
That should work. Though I picked up a set of all four used from an STI for $65 on ebay. They worked just fine.
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Old 11-12-2013, 02:54 AM   #329
bigd003
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Aren't the boots different lengths between the wrx and sti coil packs?
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Old 11-25-2013, 06:37 PM   #330
THE Rubasu
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I was wondering if i just wire in the trigger(s) to the main ecu plug, where should i be pulling the +12 from? preferred to be from the plug so its all new wiring.

I have a 22t harness and i am currently putting a apexi PFC in it and wanted to just do the upgrade now, the 20g block now has 25d heads on it and i have coil packs that fit it.
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Old 11-26-2013, 11:17 AM   #331
rob
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Quote:
Originally Posted by THE Rubasu View Post
I was wondering if i just wire in the trigger(s) to the main ecu plug, where should i be pulling the +12 from? preferred to be from the plug so its all new wiring.

I have a 22t harness and i am currently putting a apexi PFC in it and wanted to just do the upgrade now, the 20g block now has 25d heads on it and i have coil packs that fit it.
On the 22t harness, I would use the power wire that goes to the stock coil pack.
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Old 11-26-2013, 01:32 PM   #332
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The power should come directly from the original coil voltage supply (usually a fused wire somewhere) Keep in mind, coils pull up to 15A, so any old 12v supply will not do.

Ground is very important too. Best bet is to use stock ground location, if available. If not, find a good bolt on the head, or go all the way back to the battery. If the coils you are using have the ignitor in the coil itself (usually 3-wire coils), a bad ground can fry the PCM.
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Old 11-27-2013, 12:31 AM   #333
THE Rubasu
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yeah rob on its a N/A 22 harness converted to a 22t harness. now is being changed to a 20g. thanks thats what i was thinking.

bacon. im using the converted coils from a wrx that i have already modified. and ill keep that in mind to make sure the ground is good.

Thanks for the quick replies
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Old 11-27-2013, 09:45 AM   #334
Bacon117
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Quote:
Originally Posted by THE Rubasu View Post
yeah rob on its a N/A 22 harness converted to a 22t harness. now is being changed to a 20g. thanks thats what i was thinking.

bacon. im using the converted coils from a wrx that i have already modified. and ill keep that in mind to make sure the ground is good.

Thanks for the quick replies
Maybe you mentioned it earlier in this post, but I'm curious why are you swapping coils?
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Old 12-07-2013, 12:50 AM   #335
ProjectGC
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Quote:
Originally Posted by Bacon117 View Post
Maybe you mentioned it earlier in this post, but I'm curious why are you swapping coils?

Refer to page on for previously mentioned

Last edited by ProjectGC; 12-07-2013 at 12:59 AM.
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Old 02-18-2014, 11:06 PM   #336
spenny1995sti
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I put the new coils in, wired everything up and triple checked everything, my car turns over but wont start. I need help !!
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Old 02-19-2014, 12:22 AM   #337
CraftyCraft
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Quote:
Originally Posted by spenny1995sti View Post
I put the new coils in, wired everything up and triple checked everything, my car turns over but wont start. I need help !!
Check the grounds. The coil packs ground to the manifold which grounds to the... car. Forgot where. If you have the plastic tgv deletes, then you need an extra ground. If that doesn't help you, check that you're getting fuel.

Tl;dr check ground wires and fuel delivery.
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Old 09-05-2014, 05:52 AM   #338
SchismX
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I just looked under my hood and appears I may already have the conversion. Is this true?
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Old 12-20-2014, 04:15 PM   #339
Rocco87
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There is alot of dead links to pics here! I cant get my wrx coils to fit om my legacy turbo -92 . i have 2 bolts for the original coils in my heads. I read something about i have to grind my new coils down a Little bit to fit them into the heads. does anyone have some pics on this operation?
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Old 09-15-2015, 10:49 PM   #340
sizzflair
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For those who want to do this the clean and easy way, purchase 04+ wrx coils (don't get the cheapo ones... get the genuine ones so you don't have to worry about them failing) and purchase "Subaru Ignition Coil Wire Harness Terminal & Plug Set Impreza WRX STi Connector" from ebay. You can go with the cheaper route of soldering them in, but I found out that one of my solder was pretty weak and broke off when I replaced my older 06 wrx coils.

All you have to do is crimp (and solder if you want to do it right) the pins onto the ej20g coil harness and install them into the harness along with the silicone seals. Then you take a 16 gauge wire and install a ground to the center hole of the harness. It was that easy.
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Old 11-03-2015, 09:02 PM   #341
Lost in the sauce
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Quote:
Originally Posted by sizzflair View Post
"Subaru Ignition Coil Wire Harness Terminal & Plug Set Impreza WRX STi Connector" from ebay.
;-) Thanks for that but can you clarify this....

Quote:
Originally Posted by sizzflair View Post
Then you take a 16 gauge wire and install a ground to the center hole of the harness. It was that easy.
"Center hole of the harness" ???

Pardon my ignorance. Thanks!
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Old 12-13-2015, 06:38 PM   #342
HamFist
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Will this work on a stock 2000 RS ECU? I read the thread. My engine is in, with fuel and 12v, but no spark. I am using my stock RS ECU with the later style rubber coils.
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Old 12-13-2015, 06:47 PM   #343
makipsee
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Quote:
Originally Posted by HamFist View Post
Will this work on a stock 2000 RS ECU? I read the thread. My engine is in, with fuel and 12v, but no spark. I am using my stock RS ECU with the later style rubber coils.
I have 04 sti packs on my 98 RS with no problems
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Old 12-13-2015, 07:42 PM   #344
HamFist
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It seems straight forward, but I'm not sure what I'm missing.

The correct cylinders are tied together on the COP harness. They are tied to the correct wires on the engine harness.

5v is going to the power wire in the COP harness.

The ground has been attached to the manifold, block, body, and battery. Still no spark.

Fuses are fine, too.
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Old 12-13-2015, 07:45 PM   #345
makipsee
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Quote:
Originally Posted by HamFist View Post
It seems straight forward, but I'm not sure what I'm missing.

The correct cylinders are tied together on the COP harness. They are tied to the correct wires on the engine harness.

5v is going to the power wire in the COP harness.

The ground has been attached to the manifold, block, body, and battery. Still no spark.

Fuses are fine, too.
The packs i have have built in triggers so i had to bypass my ignitor.
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Old 12-13-2015, 07:49 PM   #346
HamFist
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My ignitor was built into the coil pack. It should not even be an issue to bypass it. It goes out the window with the coil pack.
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Old 12-13-2015, 07:51 PM   #347
makipsee
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Quote:
Originally Posted by HamFist View Post
My ignitor was built into the coil pack. It should not even be an issue to bypass it. It goes out the window with the coilpack.
Ooo ok. mine was before they did that.

Edit: wait only 5volts is going to the primary side of the packs??
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Old 12-13-2015, 07:58 PM   #348
HamFist
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Quote:
Originally Posted by makipsee View Post
Ooo ok. mine was before they did that.

Edit: wait only 5volts is going to the primary side of the packs??
Yes. 5v through the single yellow wire in the COP harness. That 5v is coming from my stock engine harness.
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Old 12-13-2015, 08:07 PM   #349
makipsee
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im pretty sure that yellow wire should have 12volts. also check i think fuse 11 from the under hood fuse box


Edit:: here is why i think that


Last edited by makipsee; 12-13-2015 at 08:15 PM.
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Old 12-13-2015, 08:15 PM   #350
HamFist
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Quote:
Originally Posted by makipsee View Post
im pretty sure that yellow wire should have 12volts. also check i think fuse 11 from the under hood fuse box


Edit:: here is why i think that

F16, maybe?
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