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Old 04-12-2004, 11:39 AM   #1
digitalpimp
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group 2 96 gti

Default new coilpacks..

i've been pondering using rx-7 FC coil packs, but to find out if i can wire them in place of the stock coilpacks i need to know exactly what each of the three wires that go to the currnet coilpacks do...

on my nissan i run a haltech computer, on the haltech forum people always say the see HUGE gains by running the FC backs, lots of honda people say it even changes the sound of the motor.

if the stock system uses wasted spark (which it must, can't run sequential with 3 wires), then it should be easy to wire in FC coil packs.

i'm assuming the stock coilpack is grounded to the intake manifold, then one wire is power and the other two are trigers.

i'm hoping to install these along with ngk iridiums and moroso ultra 40 wires. if all goes well i should just have to mess with the timing and run massive gap.
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Old 04-12-2004, 12:45 PM   #2
CatchMyDrift
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I had tried something similar to this before. I was looking for an alternate coil too. I took my car (93 Impreza 1.8) to a local Subaru shop and the guy said the standard coil was a "high energy ignition". Because it is a distributorless ignition system, the plugs and wires are getting all the juice they can. The way Subaru made these coils, is a direct current. "High energy" But if you do get anything "more" powerful, and you dont blow up a plug or burn a piston, let us know.
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Old 04-12-2004, 01:24 PM   #3
Legacy777
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AWD 6MT EJ22T AWIC Swap

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I'm assuming you're talking about just a standard coil pack.

Pretty sure the way it's setup is two triggers and one ground. I've added an MSD Dis 2 unit on my legacy, and tapped into the two triggers.

Here's a fsm scan of the coil pack. I thought I had one with an exploded wiring diagram...but can't seem to find it.

http://www.main.experiencetherave.co...ilpacktest.jpg
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Old 04-12-2004, 02:47 PM   #4
digitalpimp
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Quote:
Originally posted by legacy777
I'm assuming you're talking about just a standard coil pack.

Pretty sure the way it's setup is two triggers and one ground. I've added an MSD Dis 2 unit on my legacy, and tapped into the two triggers.

hmmm, if the 3 wires are two triggers and one ground where does the power come from?
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Old 04-12-2004, 02:55 PM   #5
Compressed
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Just posting to let you know that I would love to hear the results of this.
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Old 04-12-2004, 04:52 PM   #6
digitalpimp
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yeah, all i need to know is exaclty how the stock coilpack works, so i can emulate it with bigger ones. the guy have said these are "high energy" coils, but they are weak compared to my sr20det's coils, and people even upgrade those. more spark = more power (and better mpg )

i'll also remount the new coils closer to the heads so the spark plug wires are shorter. it's all about the efficency baby.
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Old 04-13-2004, 09:28 AM   #7
Legacy777
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Quote:
Originally posted by digitalpimp
hmmm, if the 3 wires are two triggers and one ground where does the power come from?
I might be calling them the wrong thing.....by saying they're triggers.

Let me try and find the wiring diagram I used to hook my MSD unit so I'm not telling you the incorrect info.
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