How to make cheap coil on plug setup
 

This is a topic I saw on another forum and found it very interesting:

So you guys out there that have been pondering this, it's a lot easier than you think. I would list this as one of the best mods I've done yet. Even if you're not boosting 25psi+, it's still a worthy mod. The low end torque and improved throttle response alone are worth it. My car also idles better, and runs smoother now with these. I was shocked how much better overall my car ran. Next thing I'm doing is opening the gap on my spark plugs and see how wide it will go without break up. That alone should net a little power gain, and better gas mileage. The plugs won't foul out as fast either. So here is what you're going to need.

- (Connectors to plug into the stock harness) I got them from spoolinup.com because I didn't have the time to look around. If one of you guys finds a source, please share.

- (Denso coils) I chose to get mine from a 2001 Honda Civic because they only have three wires to hook up, and they're a dime a dozen so getting replacements in the future will be easy. The Honda/Acura coils are much easier to setup than the Toyota coils. Any coil from a RSX, TSX, S2000, or later model Civic, or Accord will work. The Civic and RSX guys have used the OE coils to almost 900whp so I'm sure most of us will be ok with them.

- (Connectors or pigtails to the coils) I bought my coils used from a wrecking yard and the guy was cool enough to include the harness with them at my request. I only paid $100. Prices are obviously going to vary.

- (Three spools of 18 gauge wire) I chose black (for ground), red (power), and blue (signal)

- Electrical tape, and any other misc things for electrical wiring. Basically, it's as easy as hooking up the corresponding wires. Here are the wiring diagrams.

- This is the Evo diagram. If you're not familiar with looking at these, the WHITE/RED (1.25W-R) wire is the power wire. The BLACK (1.25B) wires are the ground. The BLACK/YELLOW (B-Y) on coil one, which I believe is the passenger side coil, is the signal wire. And the BLACK/GREEN (B-G) wire on the driver's side coil is that coil's signal wire. Attachment 285924

These are the connectors that would plug into the Evo's harness. These take the place of the stock coils. I have them wire up already. You have to double up the wires going into one pin because the signal goes to two coils directly, not just one. There are two red, two blue, and two black wires.
Attachment 285925

- Keep in mind that the passenger side connector controls the two inside coils, and the driver's side controls the outside coils.
Attachment 285926

- This is the 2001 Civic wire diagram. The Civic's wiring is similar to the Evo's. The BLACK is ground for all the connectors, the BLACK/WHITE is power, and the other colored wires are the signal to each one. I just wired the colored one's to my blue wire from the connectors. Attachment 285927

These are the pigtails from the civic.
Attachment 285928

The coils themselves. With these coils, you don't need a bracket. If you rotate them, the hold down hole aligns with a valve cover bolt. So you just need to call up Bowlin Bolts in Berkeley and get some 90mm long 6x1.0 metric bolts. Attachment 285929

I'm still looking for a long rubber grommet to use between the valve cover and the coil itself as a way to prevent anything from falling into the spark plug holes. This is a rough mock up I did to make sure everything was ok. The car started on the first try, and immediately I could tell it sounded smoother.
Attachment 285930 This is basically how the wiring should be done Attachment 285931 Have fun.

These are some benefits of this setup:

- Expect just about every aspect of the car to feel better.
- Improved throttle response (especially between shifts), little to no cruise partial throttle jerk.
- Stable and smoother idle.
- Acceleration is noticeably smoother.
- Gain HP/TQ (8-20 hp is the norm, mod dependent)
- Increased gas mileage (I get 1-2 mpg better mostly highway)
- Ability to run a bit more gap. It's like driving a new car, you won't believe the difference.
- Handle 650+ HP, tested to 800whp
- Run more boost
- Greatly reduce or eliminate partial throttle cruise bucking.

This is the result of my own cop setup:

My RSX 2006 coils arrive 12/22/2011 :D

Attachment 285932


Today I make my own aluminum plate, I have to say that this is very dificult to do, spent all afternoon making it but here is the results:

Attachment 285933

Attachment 285934

Attachment 285935

Attachment 285936

This is joncop original design :D

Attachment 285937

video:
http://www.youtube.com/watch?v=-CYBtU_4jBE Last pic :D I'm very happy with this kit.
Attachment 285938

Today December 2015 just finish my new JonCop V2 now for my new project Evo 8 black mamba

http://imgur.com/Es3ysac
http://imgur.com/lYbd0QN

Here is my coil plate:


https://cimg2.ibsrv.net/gimg/www.evo...27b6585656.png

[img=http://s22.postimg.org/setprwuct/coil_plate.jpg]

This is the end....

genius!!!

I just bought a set of S2000 coils from ebay for $60 shipped to do this setup, I will put pictures of how looks my new mod :D

Just paid $430 for a Spoolin Up COP kit... :(

Wow this is an awesome idea! Now if only I had the tools and the soldering skills to do this...

I wish I was good with electrical stuff, this is def bookmarked.

Thanks man lol

Interesting...

Wow .....this is pretty cool info.....

damnn you just saved me a buncha money on buying a spooling up cop kit...thanksss

Good job man, I always thought of making one of these and save like $250.
Which seller on ebay? ...most the ones I say were about 80-120?

Would love to try this.. but I just dont have time. If an up coming weekend rolls around that I can try this I will so thanks for the info!

This kind of stuff should be all over EvoM-- somehow threads like this get lost amongst the multiple "How do I wash my Ralliart", and "What cam/turbo/ floor mat spacers should I buy?"ect "threads. Nice work.

So you are running these without any type of ignition booster or cdi box? Is that because of the coil you chose specifically? I have a spare set of coils from when I had my 2G dsm that I never got around to wiring up, I was going to try those but thought you needed a ignition booster or something to make them work due to dwell time??
If not, then you sir are my hero of the week :)

No ignition booster needed, the coils work good with the stock signals from ECU, remember the system, 1 positive wire, 1 negative wire and 1 trigger for each coil, is the same as stock coils but instead of two used four individual coils.

Is the same kit from spooling up but spooling up make a complete kit with new denso coils, carbon plate and good look wiring, all the kit for $430, is the same kit except that one can do it yourself. In my case I'm thinking of making the plate in aluminum.

{thumbup}

if you look for S2000 coils it cost 80-150, but you can look for Acura TSX, CRV, RSX 2002+ etc etc, is the same coils of the S2000, they are denso {thumbup}

I bought these:

http://www.ebay.com/itm/04-05-06-07-...item415da6f913

I bought one set and they have another.