Coil On Plug questions

[GSTwithPSI]

So for you guys running COP systems successfully, wtf? I can't get my car to run for sh*t using my COP setup. I have 2 separate COP setups as well, and neither seem to perform half as well as the stock coil and set of NGK wires I have.

Here's the deal. I hook up the stock coil and with some NGK wires, and the car pulls like a boss. It idles well and just all around runs pretty good.

Now I swap in either of the COP setups I have, and the car runs ok at idle. I say ok, because it runs noticeably better with the stock coil on. I can tell it misses randomly more often with the COP systems installed. Whatever. I can deal with a few random misses. What I can't deal with is how crappy the car runs under boost with the COP system on. As soon as the car winds up and gets to the point where going fast should occur, it hits about 11-15 PSI and totally fails. The ignition clearly starts to break up and the car bucks and runs like ass. I have the MBC set at 15 PSI, and the car runs great under the same conditions with the stock coil swapped in. With the COP system installed, cruising around and under part throttle it runs good, but anytime it hits boost under a load, game over.

So whats the deal? I know there are tons of people running these things successfully, and making good power using them too. So what am I doing wrong here? I guess I could rewire all the coils with newer heavier gauge wire, but other than that I can't think of any way to improve these things. Anyone got some pics of how their COP system is wired, what gauge the wire is, or any suggestions or tips on how to make these things perform well? Thanks.

 

[EHmotorsports]

Have you looked at this thread? Hopfully it helps.
click

 

[GSTwithPSI]

Yeah, I actually did read that thread. I haven't added any extra resistor packs or anything. I simply have my COP system wired like so:

 

[EHmotorsports]

do you have a pic's of the COP harness? and what coils do you have?

 

[GSTwithPSI]

The coils are intrepid coils. The harness is the regular 3 prong connector. No pics, but I could take some.

 

[prove_it]

Are your boots and springs long enough to touch the plugs? Also with my COP I ran my gaps at .022". Noticed a big difference. The COP systems is smoother, but technically will put out a bit weaker spark which is why people have issues with blow out.

 

[LIV4PSI]

Anyone know where to get cheap COP plates? The only ones I can find are JMFs and they are priced outrageously.

Sorry for the thread jack. It didn't seem like it was worth it to start a new one.

 

[DynastyLCD]

try unscrewing the top tip of your spark plugs while running the COP. i heard of a few locals that had breakup problems and that worked great as a solution.

i've never bothered with it, and i won't until i can afford an ARC-2 to use in conjunction.

 

[GSTwithPSI]

Hey guys, thanks for all the great suggestions. My boots and springs are all in good shape, fit properly, and seem to function as they should. I will definitely try and gap my plugs at .22", and also remove the plug tips to see if both of those things make any difference. Thanks again for the help, it's greatly appreciated.

 

[boostx]

COP plates. Let me know

 

[prove_it]

Quoting GSTwithPSI:
Hey guys, thanks for all the great suggestions. My boots and springs are all in good shape, fit properly, and seem to function as they should. I will definitely try and gap my plugs at .22", and also remove the plug tips to see if both of those things make any difference. Thanks again for the help, it's greatly appreciated.



Try things one at a time, that way you'll know if it's gap, or the plug ends. That way you'll know how to correct it if you change plugs again.