Actully flag that question. Found out I'd need 3 of these to run them properly. Looks like the Twin Power is the way to go.

 

You only need one on the leading coil if your going for fairly normal power. I cant see a good reason to put an amp on the trailing plugs.


I run one 1 MDS 6a on the stock FD coil. It gave me some problems in the last track event so I will be upgrading the leading coil to an MSD unit over the winter.

 

Im stock with 450whp, has not broke once up since Ray at PFSC did the tune.

 

I was meaning for the rev limits to work correctly.

 

Thanks for all the advise guys. Ive gone the easy way and purchased an HKS Twin power.

 

Good reading at:
http://www.jetav8r.com/Vision/Ignition/CDI.html

 

Ok my next question is can the Twin power be used with non resister type spark plugs like the NGK B10EGV's?

 

I don't know why but B10EGV's didn't work for me when I was getting my fresh motor tuned...it was LOW on power like I had blown a motor or something, almost gave me a heart attack not knowing why. I switched them out immediatly to stock 9's and I was back in business.

Again not sure if it has to do with the HKS TP and all, but if anyone wants to buy and try these plugs on their engine send me a PM...



.

 

I'm running the B11EGVs and a twin power. No problems except they don't last too long.

 

517 rwhp on twin power with 9's all around 2+ years no problems.

 

if you are going to use OEM coils, switch to the ones from an FC

 

No need, don't waste your money.

 

So I take it the answer is YES, the twin power can be used with those plugs.

 

Absolutly, I've been running them for 2 years and my friend has been running them for at least 4.

 

When you say that dont last long, how long do you mean? I usually change my plugs ever second or 3rd service (10-15,000 KMs or 6-10,000 miles).

 

FD single, the works...

TII coils for the leading, stock FD for trailing.

Didnt think about it and ordered an HKS TP, not remembering it is designed for the stock 3 coil setup. Can I wire the leading plugs up to the two HKS TP trailing wires..? Leave the HKS lead connection alone...? Basically use the twin power for my leading coils only...

Or do I need to dump the TP and go with something like an MSD with 4 blaster coils?

 

I'm running an MSD 6A on the stock leading coil with no issues in that power range. I plan on upgrading to 4 MSD coils and adding 3 more 6A's this summer with a high boost, race gas tune.

 

I've purchased the Autronic 500R finally. So by summer I will know how that works out. Running 40/60 methanol water mix.

 

Well, regarding tweakgames question concerning dwell (dwell is the charging time the coil has), for our engines at 9k rpm there is only 3.3ms between spark events with wasted spark leading, so we really only have a charge time of 2 - 2.5 ms. This is where most of the problems occur, and even if you increase dwell, if you're already above 3 ms (which most likely you are), then it won't make a difference. This is where the CDI of the twin-spark or other boxes comes in, it drops the effective charge time to about 1 ms, so you can get adequate power in the coil and then flowing to the plug in a shorter time. The other option would be running the leading coils separately in a coil-on-plug setup instead of a wasted spark setup, allowing double the dwell and therefore more (altho not double) the energy, but this would probably make the difference between a misfire and a healthy spark

 

My haltech E8 is set to Constant charge time of 3.5ms with a spark breaktime of 600microseconds set to distributor and falling spark edge. and dwell mode to constant.

So are you saying I can change these parameters once I have the autronic 500r installed? What settings are recommended. I cannot find any info on this.

Ian

 

I have no experience with the autronic products, so i dont know. All I was saying was that just increasing the dwell will not help at high RPM's because there literally isnt enough time between spark events for even the current amount of dwell and discharge time if the engine is run in wasted spark (which ours are from the factory). I believe you need new, separate coils to run COP, not to mention whatever modifications or changes in code and outputs to actually individually fire the leading plugs by rotor.