coil on plug ? is it worth it ?

[fiddlersport]

seen a few members run the coil on plug set up

is it worth it and is the tooth and trigger required on the main crankshaft pulley or do peops use the sprocket with the earlier oil pump ?

[_shaun_]

Most people run it with a trigger on the crank pully its not really worth it unless chasing massive power

[fiddlersport]

i was thinking it would be more accurate and can be fine tuned rather then the stock trigger which is in the dizzy on the head

just like most new cars, cam sensor, crank sensor

[daniel_g]

If you are going standalone then may aswell do it.

[_shaun_]

Certainly more accurate and will give it a smoother map but your looking at a minimum of a grand todo it so unless your chasing big power and going standalone wouldn't bother. I had all the parts sitting and sold them on awhile back I'd like todo it again but with the emu already up and running dropping so much money on something that you hardly notice id say there's a lot better things the money could be used for.

[fiddlersport]

thanks shaun for the good advice

[Stu]

COP has its advantages and in my experience its only disadvantages are in the requirements when setting it all up.

Ideally you need to run an aftermarket ecu to gain the most out of them - in a perfect world an ecu with 4 ignition drives would be best so you can run sequential spark, however the coils work fine with two ignition drives in a wasted spark scenario. You could make them work with a stock ecu but you need to get quick tricky with dividing the ignition drive signals and it probably wouldn't be worth all the aggravation. Getting the tacho to work can be a touch tricky for beginners - best way is to run it direct from your ecu if possible and just change the resistor inside the tacho. The COP's themselves only have low level spark event outputs and you need to combine the signals so the standard tacho will show the correct reading but it is possible.

So in my experience they've worked well and I've always experience strong spark even under some reasonably high load. I haven't experienced what they are like with longer dwell times but to date I haven't had to extend the times as they've performed well. Another obvious advantage is the lack of spark transfers ie king lead, dizzy cap/rotor, spark leads. Less things to go wrong?

COP runs perfectly using the stock trig gering in the dizzy so no need to change anything triggering wise. In my own car my ecu has an inbuilt oscilliscope and the standard 24tooth and sync triggers supply a nice clean signal with the lowest level of filtering - admittedly I have all new wiring right thru but the signal itself is good.

Edited November 26, 2014 by Stu

[fiddlersport]

you lost me on the second sentance Stu...

when you coming to england for a short term holiday you can try install it on mine lol

just about managed to wire up the 5efhe in me n/a and after that i wouldnt want a long wiring job again for a long while lol

[Stu]

Haha - I wish I could make it over, see the family friends and where the old man grew up.

[gorganl2000]

from all i've read and seen (even on 4e/5efte set up) the COP seems great once done properly....just as stu said

however, i've also seen that the stock ignition system will do a pretty good job for the average car owner with the typical mods up to about 300/350bhp....just make sure that all your ignition wiring, components and connections are in top condition

some of the problems people have are related to the "aged" ignition components the cars have on, some of them over 20 years old....so an ignition refresh could yield wonders

Edited November 27, 2014 by gorganl2000