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Old 14-04-2020, 10:13   #1
Mikey_Vieira
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COP kit worth it?

Hi guys,

Just wondering whether anyone has seen any drastic improvements when they’ve installed a coil on plug kit? Read many reviews on these and are mostly positive but wanted some opinions.

From reviews there’s many claims that you gain hp, smoother ride/acceleration, transition between gears smoother, MPG gains ect. Has anybody seen or have evidence of specific gains from OEM?

I’ve looked at the Spoolinup kits so far. I have an evo ix running 400bhp, but have heard people even install COP kits on completely stock and noticing a big improvement.

What’s your opinions/experiences?
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Old 14-04-2020, 11:25   #2
Benjer182
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I recently spoke to Norris designs about getting my evo6 up to 410-420bhp and he gave me a shopping list of bits, while I was on the phone I asked about the COP kits and he said I wouldn’t really notice any difference at that power level as long as my standard kit is in good condition
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Old 14-04-2020, 12:57   #3
mlau1294
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They look nice......
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Old 14-04-2020, 13:27   #4
Lolo la Torche
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I have 650hp @2.4b of boost, E85 and stock Wires and coils. Just 0,5mm gapped spark plugs (2 ranges colders than stock).

No misfire…

I think it's most of time a placebo effect (if wires, coils and spark plugs are not too much weared of course)
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Old 14-04-2020, 14:39   #5
Mikey_Vieira
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Thanks guys.
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Old 14-04-2020, 14:52   #6
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It totally depends.

If your standard coil packs are well past their best, then you have a choice to replace with standard, or to replace with a CoP kit. Neither will be "better" at running the engine.

However, there is more to this than that simple statement.

Firstly, when I made my CoP kit for my previous Evo (and wrote the How To guide on here), my coil packs were past their best. And I like tinkering.

The advantages of a CoP kit are that you need only replace 1 coil if one develops a problem. So while either option might cost the same initially, in the longer-term, a CoP kit may save some money.

Then there is the possibility to run true sequential ignition. This requires an after market ECU, like a Link G4+ and a couple of extra wire runs to each seperate coil. It is also helpful to adjust the dwell time in the map for new coils and this reduces current draw from alternator. When I had my Evo 9 re-wired and remapped an o Link from wasted spark to sequential ignition there was a tangible improvement in smoothness compared to wasted spark. It also cuts current requirements for spark from alternator in half.

There are no real downsides to running a CoP set up.

It's just an option to consider. My current Evo 6 is running standard coils on an Autronic ECU. If the coils degrade I'll probably go back to a CoP set up.
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Last edited by Rampant; 14-04-2020 at 14:54..
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Old 14-04-2020, 17:30   #7
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I'm running link g4 and an fp black at around 500bhp. My car could be a bit jerky to drive on very light throttle, i put brand new oem coils on but it didn't make any difference. I then went to a cop kit and job done, drives really smoothly now, so for me it was definitely worth it.
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Old 14-04-2020, 19:01   #8
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I went through a couple of coilpacks/leads over time so snapped up a COP kit off one of ze lads on here ....has been faultless since fitted ,so for reliability alone ( toyota blood denso ) worth buying if any issues with current oem .
Cant note any other difference tbh ,but look nicer suppose
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Old 14-04-2020, 22:02   #9
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Do you need a map tweak once fitted or literally plug and play ready to go ???
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Old 14-04-2020, 22:31   #10
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Do you need a map tweak once fitted or literally plug and play ready to go ???
No "need" to change map.

However - if possible it helps to adjust dwell time because the normally used Denso coils saturate in a shorter charge period - and the extra charge over this only heats up the coils. It's nothing to dwell over if you can't change the map, because they sit on a hot engine already, and the 'small amount' of added heat doesn't appear to shorten their lifespan.

So basically plug and play, but map can be tweaked if possible simply to extend coil life.
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Old 15-04-2020, 06:51   #11
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Just get brand new coil packs and leads, along with plugs

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Old 15-04-2020, 08:10   #12
lautll421
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Quote:
Originally Posted by stu8 View Post
Just get brand new coil packs and leads, along with plugs

Stu
Agree but they are not cheap either if genuine MMC parts.Hence the question of going COP instead or....?
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Old 15-04-2020, 09:00   #13
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Agree but they are not cheap either if genuine MMC parts.Hence the question of going COP instead or....?
Genuine coils are £335 each. WOW.

Pattern ones are £55 each.


Personally, I think I'll go back to a DIY set of looms and CoP system when my Evo VI coils display any signs of degrading.
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Old 15-04-2020, 17:11   #14
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I built my own COP and there is a noticeable smoother pick up not that the std wasn't working ok, then people started banging on about dwell so i took it out and back to std. Its been sitting there gathering dust, so if I understand dwell is only for heat? Ant of Indgo-gt who mapped it said that he would change the dwell via live internet but I never took him up on it.
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Old 15-04-2020, 18:40   #15
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Agree but they are not cheap either if genuine MMC parts.Hence the question of going COP instead or....?
Wouldnt go genuine, just get copy parts

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