Ok, I've searched everywhere, I thought it was Knight Sports, but I can't seem to find a post or a store that has stronger ignition coils for our car.

Who has them again?

 

http://www.okadaprojects.com/index.htm , they make it but i can't find it on their web site, try email them.

 

https://www.rx8club.com/series-i-tech-garage-22/can-coils-relocated-82232/

 

I have the ignition solutions coils, I had to replace my old ones. Pieces of junk.

Here is the e-mail I got from them.

Yes we do have an application for your 2004 Mazda RX-8. Our system
consist
of 4 individual ignition coils
to replace your existing OEM coils. Price for the system is $580 +
Shipping cost. Part number for the system is
PDC-5313-01.


If you are interested in purchasing a system, contact our main office
or
email us again
with your phone number and we will contact you for a confirmation. We
look
forward
to hearing from you.

Kind Regards,

Ignition Solutions, Inc.
7920 Silverton Ave. Ste. E
San Diego, CA 92126
www.ignitionsolutions.com
858-586-0080 Phone
858-586-0028 Fax

Hope it helps. I haven't had any problems with them in the 40000 miles that I have driven with them.

 

hey Jaguar,
can you please post what you've noticed since you've installed the coils??
any feedback would be great... thanks!
did you also change your wires?

 

Yes, please tell us more about the Ignition Solutions swap.

 

I didn't notice anything that I could put my finger on. They have some articles on thier site about performance and fuel economy gains. The only thing I did notice was that upon acceleration that it felt more responsive. I don't know if it was me trying to justify the price or if it really was. I would like to see how it would do with an engine management system as I think they would hold up much better with a more consistant spark.


I did change the wires but changed back to the originals. There is not much difference in the wires from what I can tell. Mazda did a good job with these. I also just had the new starter and spark plugs installed. The car right now is running smooth and fast. I am chirpping the tires in 3rd gear right now.

 

I haven't had to remove the stock coils, so I was wondering, do we know who makes them? Do we have a part number? I wonder if denso, or delphi or who ever makes them simply has a more powerful version that we can drop in.

 

I contacted Jaguar's company, and here is what they told me:

"Yes, we do have a Plasma Direct Setup for the RX8. It is produced in Japan by Okada Projects." www.okadaprojects.com

So, I sent another e-mail to Akira at Okada, but I have not heard back yet.

 

OK, just received this message today:

Hello Kevin,

Yes. We have Plasma Direct for RX-8.

Price: $735
Part#: PD4003001R

You can order to OKADA PROJECTS USA.
Tel: 949-583-7800
sako@okadaprojects.com

Please look at attached pictures and let me know if you have any question.

Best Regards,

Akira Sato

OKADA PROJECTS Inc.
2-3-5 Kitamikata, Takatsu-ku,
Kawasaki-city, Kanagawa 213-0005 Japan
Tel. 044-822-3341 Fax. 044-822-3342
akira@okadaprojects.com
info@okadaprojects.com
URL : www.okadaprojects.com


--------------------------------------------------------------------------------

Plasma Direct
Especially on high end import cars, nobody likes to cut into the wiring harness to install an ignition system, and on top of that, for most of these cars there are NO ignition systems available at all.

The Plasma Direct™ replacement ignition coil with built in BOOSTER technology to amplify secondary spark current by 100% (2 times as much as OEM) and release about 4 times as much energy at the initial moment of spark.

Highlights:

• VERY Easy to install: Remove your old coils and install New Plasma Direct Coils
• 100% secondary current (Spark Amperage) increase from 50 mA to over 100mA on most systems.
• 4 Times Spark Energy Increase for the initial spark discharge (E=1/2*L*i*i)
• Compatible with all OEM components
• Compatible with OBD-II (On-Board-Diagnostics)
We produce the Plasma Direct for many different car applications, call us for your specific needs.

 

So, they take a set of OEM coils and cut out the guts and replace them with a set of their own coils.
Seems like a good way to do it. My only worry is that the OEM PCM does some odd things with timing in order to correct the latency of the OEM coils. If any of the plug-in replacements do not have the same latency, you could end up with some nasty ping as a result of unintentional ignition advance.
I know with my AEM setup, the timing had to be gradually backed out as the RPM went up because the firing time of the AEM is much faster than stock.

 

Jeff, I'm curious. You have mentioned that the timing moves with your setup. Yaw has stated that he built his system to compensate for this and that it doesn't. Any idea why this is or how it works?

 

I am using a transistor input setup that I designed for this just as Paul did (I use a different transistor, but it delivers the same output electrically).
I didn't see anywhere that he verified that the ignition timng didn't shift.
I determined the shift via ignition retard required to eliminate ping as I don't have any good way of verifying actual ignition timing at the plugs at the moment.
If his subject didn't ping, he would probably have no reason to suspect that the timing had changed.

Remember, the pulse doesn't change timing - the reaction of the coils does.

 

So will those plasma coils fix our problems once and for all??

 

Not sure - I'm waiting on more info from them.

 

Here is the answer Jeff:

You don’t need to worry about that part. The signal transfer between the coils and the OEM PCM will not change NOR will it interfere with any signals.

The change happens only on the Coil Amplification side and that part of the change will not reflect back to the PCM.

In other words: The PCM will see the same thing as before.

This works because there is a small window of opportunity, when the PCM is NOT looking. This is the Moment the spark hits. And at that Moment the Plasma Direct coils will amplify the signal and also produce the ultra fast AC discharge. This will also not have any effect on the timing.

I hope this helps, otherwise, please ask more questions.

Kind regards

Ulf

 

^^ Unfortunately that is a BS answer.
The "problem" with the OEM coils in this respect is that the amount of time they require to actually fire after receiving the trigger pulse from the PCM is not fixed and it is not "ultra fast" as Ulf mentions above.
In fact, it is quite latent and becomes more so as the RPMs rise.
Which is why the PCM fires the coils with such a wide pulse - often the coils are finally firing at the trailing edge.
If the plasma coils are so fast, they will fire too soon.

BTW - the PCM doesn't even look for the coils. You can unplug them and the only CEL you might throw is a misfire.
They are a completely un-monitored subsystem.
So, double BS on Ulf's response.

 

This is getting good - I feel like a debate moderator

Lets see what he says

 

Remember who is trying to sell you something .... follow the money...to get the BS

 

I most likely will get a new reply in the morning - stay tuned

 

I wonder if they changed anything with the coils. I purchased mine for about $430. Why did they go up so much?

 

Still waiting to hear back, so maybe they did change something.

 

OK, here is the latest message:

What you describe is partially correct. I did not go in to the details in my last email, because most people are not too much interested in these details of coil charging and discharging time.

Every inductive controlled coil and that is including this one on the RX8, has 2 parts to every cycle. (This is inherent to the system)

It is the CHARGING time and the DIS-CHARGING time.

During the charging time the coil is being charged with energy through the battery. This is watched by the system, no matter if it is a computer controlled system or an older analog system. These systems watch for Current and sometimes for Voltage. A circuit is making sure that a maximum set current is not overstepped, it would hurt the coils.

After the charging time comes the DIS-CHARGE time.

The moment of DIS-CHARGE is the moment of Spark generation.

This moment is controlled by the PCM and it varies like the ignition timing varies.

Based on the information of the last few cycles the PCM will calculate the best timing. In order to be ready for the next cycle timing the ON-TIME beginning also has to be adjusted, because the coil needs a FIXED charge time.

But anyhow, if you would replace the coils with a different kind of coil that either loads up faster or slower, then the current limiting system would not work correctly and the coil can overload.

That is what I meant with “watching”

Also, since your car has OBD built in, it MUST watch the ignition Cycle for failing and this is required by law on the stock car.

The only time when the system is NOT watched, is during the dis-charge time of the coil.

The reason for this is that after the spark hits, the oscillations are so large and complicated, it is very difficult to analyze.

And during this small window of time is the action of the Plasma Coils.

At the Moment when the Power Transistor opens, and the primary self inductance voltage is produced, then the Plasma Coil Circuit is activated and the polarity at the primary side of the coils is changed ultra fast, which causes the AC discharge and the Peak to Peak current to increase. All this can be verified with a good quality oscilloscope and the correct probes.

If you want, give me you phone number or call me at 858-866-9331

May be it is easier to explain this over the phone.

Keep in mind, I am German Time Zone, which is west cost time plus 9 hours

Kind regards

Ulf


So, please discuss

 

Uh, sorry. Still BS.
Nothing is "watching" the charge time. It is managed by an integral transistor (called the ignitor) in the coil pack itself.
The PCM fires the coils blind.
However, Mazda was certainly aware of the dwell/charge time of the coils and adjusted the timing accordingly.