Hello all. After much research on this forum and head scratching and advice from other members, I finally installed my LS coils. There are some great brackets available but either didn't fit my truck coils OR required removal of the shock tower brace. I came up with an alternative that made me happy. I used a generic relocation bracket that required modification, welding an extra piece and extended threaded rod, and extended valve cover bolts with aluminum tubing spacers. I used Flyin' Miata's instruction for wiring it into the Hydra. A set of cut to size plug wires from MSD, following instructions from the Passion Channel on You Tube rounded out the parts needed. Total cost was around $150. I copied ignition settings from a friends car that has the FM setup. Car started right up and runs and pulls flawlessly so far.

i appreciate the help from other people who have done this before and I'll be glad to contribute if anyone has any questions about my install.

Paul

 

Did you not see the Singular LS coil bracket?

This should have worked for you and doesn't locate the wiring over the hottest part of the engine bay.

 

For all the wiring I ended up splitting a cheap set of coil harnesses and relocation cables from Amazon. Worked with the singular and SADFab brackets swell. Just cut an end off the relocation cable and wire like you would any cop.


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I'm also setup for sequential. It helped because it's wired individually. You just run your two extra wires to the corresponding coil. This isn't rocket science.

You get your pre-wired options for power, ground, signal which I didn't use since it's output from megasquirt directly, then your 4 coils. I think the hardest part of your setup is that you have hydra.

 

If you looked, you'd know SADFab clears everything. It was designed explicitly to fit all valve covers in its original iteration. Oh look, here's that prefab harness that works perfectly.

 

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OP has D514A CNPS (mount points on front and rear) rather than D585 CNPS (mount points on top & bottom).
Also, the SADFAB bracket may not clear the OP's front strut brace - when I was trying to figure out how/where to mount D585s the Front Strut brace was always in the way so I switched to D514As and independently came up with a bracket similar to the Singular one (except my coils are upside down from theirs to improve hood clearance - not just because I'm in Australia).

 

Can confirm. He didn't return our kit due to poor fitment. He ended up using a differnt style coil that has alternative mounting that neither SadFab or our bracket provides.

Glad you got it up and running!

 

Doesn't look like these are still offered for sale, looking at the Singular website.

 

LS coils fix everything, even boosted NC's...

 

As others, who have installed LS coils, have mentioned there was no noticeable change in performance. Maybe it idled a little smoother? I haven't had ignition issues except MAYBE last week when it was very cold for NE Florida and I detected a few misses while passing a string of cars in 3rd gear. I assumed it was due to colder air being denser and causing me to hit the boost limit (12.6) but it may have been spark blowout. Either way, new plugs are gapped at .035 instead of the .027 before. Has to mean better combustion, maybe cleaner tailpipe emissions? That makes my car almost a Prius!

Paul

 

I had trouble finding something else on the SADFab website a couple of months ago. Things aren't always there.

 

In a sense, coils discharge at the energy level necessary to jump the gap; larger coils can thus handle larger gap and/or more resistance within the gap. As such, there is no specific performance change under circumstances where the factory setup was adequate. For my NC (and insofar as I'm aware, my NC is the very first one to ever get LS coils...) i was getting measurable power loss at ~15psi above 6000 RPM's. I have a paper dynojet printout where spark breakup was visible at 5k , with significant chop at the end of a 7500 RPM run-up. For manifold pressures above 18psi, my instrumented performance data showed power was flatlining, even though my EFR 6758 still had plenty of compressor map space left to give. At this point, I was already running a gap down to 0.018" and finally gave up trying to make it even smaller.

Swapping to LS coils and moving back to the ITV24 default gap of 0.032" immediately netted ~30whp as instrumented by two dozen Torque and EcuTeK data logs piped through vDyno. The only change for these runs was the coil swap and related dwell mapping change. Since then, I've been able to add in a touch more timing and a bit less fuel, and have netted probably another 5-10whp give or take.

Upgraded coils matter at high cylinder pressures, which equates to high cylinder air/fuel density. And it's a measurable change, once you've hit the wall on the stock ignition.

 

 

I just went with a generic 4 coil holder on the fire wall obviously all our stuff is on the correct side here in OZ but iam sure you could put it on the opposing side.

 

My stock 10.8:1 compression on also-stock internals is waving "hi!" to your stock 10:1 compression on stock internals BOOST CARS, ACQUIRE CATS. ALLOFIT, SON!

I logged 22psi on the way to work yesterday. At some point, I'm gonna lift the head off the block of this NC engine hehehe... If E85 was available in this area, I'd shoot for 400 at the tires.

 

 

I was hoping my "ALLOFIT!!" statement would demonstrate my intentions of being snarky

I know the older blocks aren't safe for a ton of boost at the lower end. The NC2's and later get the unfair advantage of better internals, and I'm only running those ridiculous boost numbers at the top end of the RPM band. I'm still not entirely sure 22psi is "safe" either, but I'm also willingly putting myself out there since apparently nobody else has. The 3rd gens really are the red-headed-bastard-stepchildren of the Miata world

Anyway, please don't take my comments as anything but banter.