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Old 04-13-2011, 06:44 PM   #1
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Default Cops or LS Coils? I need better spark!!

Ok, so I got water in the plug tubes after washing the engine and it took me a good 15 minutes to figure out why it was running like crap! My old NGK blue wires have had it and it's time for a spark upgrade anyway. Plus I'd like to finally get more than a pube of gap (.025) and not pop in boost. I've been looking at the COP threads and the GM LS truck coils and even a few other ideas, but I don't see an almighty Ignition coverage thread. What's new, what's been tested to work flawlesly (trick question I know)? Any multi spark options? I'm looking to stay under about $200. I know I'll get allot of crap for this, so start the beating!

96-Built, 99 head, FMII/Hydra at 15psi
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Old 04-13-2011, 07:28 PM   #2
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Ls beats msd. You can get ls couls from chpnswsm6 or whatever his name is. Or you can buy em new for like 30 apiece. Wires are like 130 or something depending on length.

Ls2 truck coils are the current champs. You could also buy my old 01+ nb dual plug cops for cheapo. Proven good to 26psi or soemthing like that.
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Old 04-13-2011, 08:46 PM   #3
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Any issues with the LS truck coils ? I'm guessing they are actually from the LQ9 6.0L truck engine and not LS2. I wonder how different the plethora of other LS engine coils are such as LS1/2/6, 5.3L or 4.8L truck engines? Would they still use the miata wires?
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Old 04-13-2011, 09:09 PM   #4
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My toyota COPs are blowing out at 23psi with .035 gap
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Old 04-13-2011, 11:15 PM   #5
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23psi is quite a bit, will a .030 gap hold? I'll probably go up to @ 20psi, so that's good to know.
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Old 04-13-2011, 11:23 PM   #6
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Last edited by customstreetmachines; 04-14-2011 at 12:16 PM. Reason: duplicate
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Old 04-14-2011, 12:21 AM   #7
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I'll let you know if a .030 gap holds, because that is what I just got done doing.

EDIT: You can do the COP upgrade for under a hundred bucks. I picked up the cops for $30 on ebay, connectors with pigtails for another $30 (I think, may have been less), capacitors on ebay were cheap, I bought a spare ignitor to do the conversion for $20, then wire and a strip of aluminum to hold it down.

If the .030 gap doesn't work, then I will probably look into the truck coils.
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Old 04-14-2011, 12:19 PM   #8
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I haven't seen a set of cops for $30 yet. I may end up going straight to the truck coils myself.
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Old 04-14-2011, 02:53 PM   #9
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I jumped on a set of the LS2 truck coils. I'll be buying the plug wires soon, so if anyone wants to pitch in, I'll split them with you. Found the magnecores for $80 at Alamoautosports.
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Old 04-14-2011, 02:56 PM   #10
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So far .030 is bueno
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Old 04-14-2011, 04:35 PM   #11
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How do you wire these up?
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Old 04-14-2011, 05:09 PM   #12
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just do the cops, they are more than enough at your power level.
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Old 04-14-2011, 05:35 PM   #13
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Originally Posted by hustler View Post
How do you wire these up?
I wondered the same thing. I've got the BIPs in my diypnp, and I'm wondering if I would need those. I also want to know if I could just use my cop harness to the coils?
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Old 04-14-2011, 05:58 PM   #14
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Any good links to "understanding COPS and wiring them up"? It's a car part that makes no sense to me, basically magical spark mershines.
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Old 04-14-2011, 06:05 PM   #15
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Quote:
Originally Posted by hustler View Post
Any good links to "understanding COPS and wiring them up"? It's a car part that makes no sense to me, basically magical spark mershines.
Wait you are running stock coils on your track setup still? What do you not understand about COPS?
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Old 04-14-2011, 06:48 PM   #16
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I run stock coils in the winter cause my toyota COPs don't like my low battery voltage in the winter...or dont' like being cold in general, not sure. But the car backfires bad, like spin the engine the wrong way against the starter bad. But in the summer it's all good.

I only did COPs cause Lazzer gave them to be dirt cheap with wires. Otherwise this low boost street guy would run his oem coils all the time.
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Old 04-14-2011, 07:30 PM   #17
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Quote:
Originally Posted by customstreetmachines View Post
I jumped on a set of the LS2 truck coils. I'll be buying the plug wires soon, so if anyone wants to pitch in, I'll split them with you. Found the magnecores for $80 at Alamoautosports.
Will the spark plug booties fit your miata spark plug wells?

If not you may experience sadness.
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Old 04-16-2011, 11:27 AM   #18
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What all is involved wiht the LS2 coils and wires? If I can't get the COPs working I'm going to explore alternatives such as this before I jump on the FM LS3 bandwagon.
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Old 04-16-2011, 01:15 PM   #19
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4 wires

hot
power ground
signal
signal ground

bus the hots together
bus the power grounds together
bus the signal grounds together
run each signal wire to your ems
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Old 04-16-2011, 05:03 PM   #20
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Sequential sounds easy enough, however do I need custom plug wires?
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