Coil on plug

Constant_Project21 · 09-28-2008

Was just browsing an ebay motors page, that had a built 2g for sale. I noticed the coil on plug ignition system, and that it is on most high powered dsm's. I know the basic premise of the coil on plug system, but want to know some more about it. I am planning on building a built 1g soon and wanted to know if the COP system was worth the money. If you got links that would be great.
Thanks.

123abc · 09-28-2008

If you do your research and know what you're doing, a cop setup can be built for very cheap. I built mine out of 4 2.7L intrepid coils and my own base plate.

Cost me no more than 50 bucks total and couldn't be happier.

http://www.dsmtuners.com/forums/arti...tup-cheap.html

craig · 09-28-2008

unless your running over 600hp the stock coil is fine. cop system is alot more looks. It does make it look real clean though

**asshanson** · 09-28-2008

+1 for keeping the stock coil, why spend the money on COP if you dont have to?

twack · 09-28-2008

i like my cop, thats all i have to say

123abc · 09-28-2008

Quote:

Originally Posted by craig

unless your running over 600hp the stock coil is fine. cop system is alot more looks. It does make it look real clean though

Compared to the stock wires and coil setup I had before, I noticed better throttle response, and much smoother power. So I would look at it more as an alternative to upgrading to thicker wires.

Febo · 09-28-2008

Wow, that link, he has the worst looking engine bay for having a cops set up. I mean, stock FPR? Really?

123abc · 09-28-2008

Quote:

Originally Posted by RLFebo

Wow, that link, he has the worst looking engine bay for having a cops set up. I mean, stock FPR? Really?

I have a 14b stock injectors fuel pump and fpr, what's so wrong with that?

twack · 09-28-2008

Quote:

Originally Posted by 123abc

I have a 14b stock injectors fuel pump and fpr, what's so wrong with that?

everything

**Shane@DBPerformance** · 09-28-2008

Stock FPR is fine unless you have 2 fuel pumps or some crazy single external fuel pump.

Febo · 09-28-2008

Quote:

Originally Posted by 123abc

I have a 14b stock injectors fuel pump and fpr, what's so wrong with that?

Ohhhh, nothing at all...... Just seems a waste of a COP setup is all.

twack · 09-28-2008

Quote:

Originally Posted by RLFebo

Ohhhh, nothing at all...... Just seems a waste of a COP setup is all.

im glad we all have to do things the same

Febo · 09-28-2008

Its scary outside of the box

twack · 09-28-2008

Quote:

Originally Posted by RLFebo

Its scary outside of the box

very, i bring my flashlight and blanket

sleepydsm · 09-28-2008

I had that setup for like a day, sputtered and misfired like crazy, wanna say had one bad coil ( I couldn't find specs to test the coils). Looked cool though! I'd prefer to buy new coils and do it, for piece of mind. Why even bother with used shit.

twack · 09-28-2008

cause you can get lucky and grab a bunch cheap you just have to find the testing specs

Constant_Project21 · 09-28-2008

So there's a mixed review when it comes to the COP set-up. From what it sounds like, is that if I am not pushing 600+ then there is no use for a COP system, other than cosmetics. I think it makes it look outstandingly clean, and that seems to be the consensus. But I guess I will have to make that choice once I come to that point.

123abc · 09-28-2008

I bought my coils off ebay. Wired them up according to the diagram in that tuner's link, and she fired up first try. Haven't had a single issue and have been loving it.

Febo · 09-28-2008

Quote:

Originally Posted by Constant_Project21

So there's a mixed review when it comes to the COP set-up. From what it sounds like, is that if I am not pushing 600+ then there is no use for a COP system, other than cosmetics. I think it makes it look outstandingly clean, and that seems to be the consensus. But I guess I will have to make that choice once I come to that point.

basically

EclipseGST · 09-28-2008

Honestly COP setups do absolutely nothing different than the stock coils without a CDI box...

The only benefit is no spark plug wires and it makes the engine look a little cleaner, unless do you it half assed with sheet metal. They are still running wasted spark (where the spark fires on 2 cylinders at a time) and the spark is the same as if you are only running 2 coils (stock).

Now if you want the real advantage, get a MSD or AEM CDI box and wire the coils individually. Then you will see a stronger spark. Even the stock coils with a CDI box will be better than a COP setup without a CDI box.

Dustin, I'm willing to bet that the reason you saw an improvement is because you had shitty wires, coil pack, plugs, or all of the above.

Now in some peoples cases that have a SMIM, no place to mount the coil pack and dont want the wires, sure... It makes it look better, but thats about it.

For the normal person that does this, its not going to cost you $50, unless you cut a piece of sheet metal with a dremel and half ass it together. I personally would never put the setup in that link on my car. Just looks like shit. I'd much rather machine a plate or buy a JM Fab plate for $80 like I did here, although I have an AEM CDI box to control it...