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Old 03-23-2012, 06:27 AM
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Custom LS2 Ignition Install
For those of you who haven't been following a few other threads I have been posting in, I have been working on a DIY LS2 ignition installation and finally got around to installing it yesterday. Here are some shots of my work:

Mocking Up




Fabbing Up a Mouting Plate




Installing Coils on Plate




Installing Assembly to OEM Bracket




Creating LS2 Wires












Fully Assembled Kit


Removing OEM Coils


Installing LS2 Coils




All Buttoned Up
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Old 03-23-2012, 06:37 AM
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Nice .... now get back to work
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Old 03-23-2012, 06:43 AM
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well done paimon
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Old 03-23-2012, 06:59 AM
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i love you guys
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Old 03-23-2012, 08:20 AM
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how are you grounding them?
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Old 03-23-2012, 08:26 AM
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Originally Posted by Chris
how are you grounding them?
the harness has a ground running from each coil to a single grounding wire. That wire is grounded to the engine's ground point right above the coils.
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Old 03-23-2012, 08:32 AM
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Bravo, monsieur!
I've just enjoyed another episode of "Paimon Presents..."

How tight is the fit in the engine?
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Old 03-23-2012, 08:37 AM
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oh it's in there nice and snug ... took me a hell of a time getting in since the mains harness runs right around there. But i use all the same mounting holes as OEM so it is bolted in there and doesn't move around
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Old 03-23-2012, 08:39 AM
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Originally Posted by paimon.soror
the harness has a ground running from each coil to a single grounding wire. That wire is grounded to the engine's ground point right above the coils.
haha, derp derp derp, you would think I would have seen that
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Old 03-23-2012, 07:57 PM
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can we know how much it cost you in parts ??
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Old 03-23-2012, 07:59 PM
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I managed to get the coils at a really good price (100 total for all 4), and then the wires and boots cost me a total of roughly 100. Throw in the sheet of aluminum and the screw dowels, and i would say about $220, and if you throw in the OEM coil bracket it would be a total of $260

edit: forgot to throw in the RX8 -> LS2 harness which was another $100 .... so we are looking at about $360ish
Last edited by paimon.soror; 03-23-2012 at 10:51 PM.
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Old 03-23-2012, 10:48 PM
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don't forget the PnP wiring harness cost
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Old 03-23-2012, 10:51 PM
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^ aha! thanks, edited the post
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Old 03-23-2012, 11:07 PM
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Where'd you ground yours exactly ? Others told me to ground on the driver side somewhere. But my PnP wiring harness was long enough to routed directly unto the battery's negative terminal.
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Old 03-23-2012, 11:27 PM
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there is a bolt right above where the coils are. There is something already being grounded over there, so I just tapped into that.
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Old 03-24-2012, 09:25 AM
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eventually you will need this too, regardless of coil/wire type

https://www.rx8club.com/series-i-do-yourself-forum-73/diy-testing-all-rx-8-coils-gm-ls2-yukon-coils-sparkplug-wires-222641/
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Old 03-24-2012, 10:27 AM
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Originally Posted by TeamRX8
eventually you will need this too, regardless of coil/wire type

https://www.rx8club.com/showthread.php?t=222641
Beautiful little tool that is a mainstay in my toolbox now. That was an awesome DIY Team that helped me diagnose a bad BHR coil. (Which Charles promptly replaced!)
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Old 06-08-2012, 08:52 AM
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does anyone know what the S2 dwell tables show?
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Old 07-03-2012, 04:53 AM
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Originally Posted by rickeo
Beautiful little tool that is a mainstay in my toolbox now. That was an awesome DIY Team that helped me diagnose a bad BHR coil. (Which Charles promptly replaced!)
This is more common than people realize. It does not get discussed openly much. I developed the DIY troubleshooting a brand new BHR assembly that came with a bad coil. It was promptly replaced once I brought it to their attention. There is no magic at work here. These can fail no different than an OE coil for all the same reasons.

Originally Posted by olddragger
does anyone know what the S2 dwell tables show?
Unless they have access to the OE map how would they and why would it matter when there is no tuning solution to access and change it?
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Old 02-12-2013, 01:02 PM
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What coils did you use. D585s? Where did you find them at that price!?!?
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Old 02-12-2013, 01:03 PM
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D585s and i got them from a member here
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Old 02-13-2013, 12:40 PM
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Damn!!!! I'm trying to hunt some down
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Old 04-04-2013, 02:41 PM
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Forgive the ignorance, but what is the advantage of using LS2 coils? Higher output voltage/current? How does this compare to BHR's ignition kit?
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Old 06-28-2013, 06:06 PM
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looks great!!! so you cant use rx8 8.5mm wires?
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Old 07-01-2013, 09:29 PM
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if you don't adjust the PCM dwell table they make less spark energy than the OE coils from around 5000 rpm to redline
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