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Old 02-25-2007, 10:09 AM   #26
redwagon
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Quote:
Originally Posted by kbahus View Post
The only weird thing is it goes lean and not rich on the wideband when this happens, so that confuses me.
Maybe, if the plug is not firing the mixture, all the air in the cylinder goes out into the exhaust unburned, and that is what the wideband sees. Not the fuel.
Just an idea. Ridicule welcomed.
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Old 02-28-2007, 10:00 PM   #27
kbahus
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My 04 STI coil packs came in today so hopefully I will have these retrofitted soon and will post results!
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Old 03-01-2007, 11:27 AM   #28
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the stealership quoted me $99 a peice for coil packs, or else I would have gotten some myself. I checked 2 of my current ones and one is cracked.
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Old 03-01-2007, 02:32 PM   #29
kbahus
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I may have some stockers available soon if you are interested.
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Old 03-01-2007, 02:36 PM   #30
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Quote:
Originally Posted by Tizzle View Post
the stealership quoted me $99 a peice for coil packs, or else I would have gotten some myself. I checked 2 of my current ones and one is cracked.
I have 3 used '02 coils. If you are interested shoot me a pm.
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Old 03-01-2007, 04:06 PM   #31
Tizzle
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thanks, I'll let you know. The coil with the crack seems to be working fine. I glued the piece back on, and changed my spark plugs. Good to have my car running like its supposed to again. i.e. 95 ver2 sti ra.
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Old 03-06-2007, 04:52 PM   #32
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I am about to go install the STI coils.

I went to my local electronics supply store (Radioshack does NOT have this stuff) and found a sweet crimp connector that fit the pins in the coil pack very well and accepted 14 awg wire. Removed the blue insulator and crimped on each connector and added heatshrink. This worked very nice and no need to solder! Filled the plug cavity with epoxy and then spliced the old connectors as Rob instructed.







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Old 03-06-2007, 05:23 PM   #33
Matt Monson
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Why aren't people just getting a USDM WRX intake manifold harness and cutting it up and splicing it in? They can't be very expensive to get your hands on...
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Old 03-06-2007, 10:36 PM   #34
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iirc the last time i looked it was like $400
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Old 03-07-2007, 12:23 AM   #35
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Other than a faulty coil pack the swap went smooth. I was fortunate enough to track another down and got the car up and running. I have one bad connection I need to investigate but it runs super smooth and pulls awesome to redline. This was a great idea! Thanks Rob!
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Old 03-08-2007, 11:06 AM   #36
Matt Monson
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iirc the last time i looked it was like $400
Maybe new...
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Old 03-08-2007, 02:20 PM   #37
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Quote:
Originally Posted by kbahus View Post
Other than a faulty coil pack the swap went smooth. I was fortunate enough to track another down and got the car up and running. I have one bad connection I need to investigate but it runs super smooth and pulls awesome to redline. This was a great idea! Thanks Rob!
Great, so your hesitation and misfire problems are gone?

-Rob
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Old 03-08-2007, 02:52 PM   #38
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yes sir! Runs smooth as silk! Now I just got to get some injectors in it and a new tune and call it a day.
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Old 03-08-2007, 03:57 PM   #39
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Originally Posted by kbahus View Post
yes sir! Runs smooth as silk! Now I just got to get some injectors in it and a new tune and call it a day.

You wanna send down some of them there fancy connectors with Christophe on Saturday? Finding that stuff in Boulder can be a challenge. And the Legacy swap just got moved up in position as far as swaps are concerned. The Ej20K will have to wait a little bit...
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Old 04-05-2007, 02:29 AM   #40
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Alright, after a good night's sleep (other) than trying to figure out what went wrong. I checked all the connections (+12V, continuity, etc) and voila! It works.

I will report on how its doing once I get to work.

ok: this is miles of difference. I inspected my old coilpacks and only one showed signs of cracking but overall they looked fairly good.

However, the new ones have zero hesistation at low, mid or high rpm. Holds boost no problem. If you have a 20G you need to do this!

Now to figure out my V-mount IC


Last edited by kingsubi; 04-05-2007 at 06:28 PM.
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Old 04-05-2007, 04:54 PM   #41
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Rock on.
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Old 04-06-2007, 05:07 PM   #42
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Oh, and would like to add that the wiring diagram does look a little confusing on paper for the igniter, but it works out that if you just follow the wires and pretend the connectors are not there. The wiring works out.

Like this:



The middle black wire on the left side (ecu) is the ground which you don't need to touch.
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Old 04-09-2007, 01:09 PM   #43
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I just bought a set of four New Age WRX coils off an '02.

Any idea how prone to failure the New Age coils are? Are they durable even if they're 5 years old?
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Old 04-09-2007, 01:12 PM   #44
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The middle black wire on the left side (ecu) is the ground which you don't need to touch.
Don't need to ground it to the chassis?

EDIT: I suppose the grounds on the new coils takes care of that, eh?
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Old 04-09-2007, 03:55 PM   #45
rob
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I just bought a set of four New Age WRX coils off an '02.

Any idea how prone to failure the New Age coils are? Are they durable even if they're 5 years old?
I don't think they have the same design problem. If you look at the old ones, the plastic body goes deep into the head. They crack and fail due to heat cycling of the plastic The new ones by contrast only have the rubber boot go down into the spark plug well and the main housing stays as far back as possible. So far I haven't heard of any issues with the newer style coils.

-Rob
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Old 04-09-2007, 04:21 PM   #46
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I guess what I'm concerned about is I got the set for $50 on eBay and wonder if they're broken or something. Seems like half as much as other people have paid. The guy said he "tested" them but I don't necessarily believe him. I'll find out soon enough I suppose.
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Old 04-17-2007, 04:03 AM   #47
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I'm still a little unsure on how to wire up the igniter..... a before and after picture would be helpful I think. So What needs to be done is the the black part where the 2 harnesses go into is what your getting rid of completely correct?
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Old 04-17-2007, 04:08 AM   #48
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I had the coil on the #4 cylinder let go on me a couple of weeks ago. However it showed no cracking at all. I just replaced it with one from an EJ20D and all is good. I'm assuming the the 20G and 20D packs are identical, and they must be because they look exactly the same and do the same job.
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Old 04-17-2007, 11:28 PM   #49
rob
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Quote:
Originally Posted by scobaru View Post
I'm still a little unsure on how to wire up the igniter..... a before and after picture would be helpful I think. So What needs to be done is the the black part where the 2 harnesses go into is what your getting rid of completely correct?
The igniter in the picture has 2 connectors on either side; one with wires from the ECU, and the other for wires to the coils. What you need to do is remove the igniter and wire the ECU side to the coil side as I have shown. The quickest way to do this is to cut off the igniter connectors from both sides of the harness and wire them directly together.
Hope that makes sense.

-Rob
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Old 04-18-2007, 12:30 PM   #50
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yah make perfect sense thanks!
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