eternal_gamer

So I recently acquired a 05 Rx-8 6spd with 45k miles. I wasn't really expecting to replace anything soon besides maintenance items such as spark plugs, and fluids to Royal Purple. But the car started to have a little bit extended crank then before and one time it wouldn't start when hot for about 5-7 sec. I figured the plugs are probably fouled out but I read on here that the coils go bad and so I checked em out from front to rear and as I pull em off the next one has a deeper and brighter burn mark on em. I can't believe Mazda made such a inferior coil. The FD Coils were fine even though the location is dumb as well by the engine heat. I prefer the FC Coils if anything. But anyways, I hate spending money fixing cars, so whenever something breaks, I always upgrade it. I was hoping to do the HKS RS Intake as the first mod if anything, but I guess BHR Ignition is going to be the first with brand new NGK Plugs. If there is another option for the coils then let me know. But from my search BHR sounds like the best choice. Bad News is I gotta wait longer now to get my Racing Beat catback for my FD which would be more cost-effective to me.

RX8Soldier

iTrader: (24)

BHR coils are top-notch. It may suck because you were 'forced' to buy them... but you'll be happier down the road.

PS I'm also needing to upgrade, though I was hoping to wait until later this summer...

1.3_LittersOfFurry

iTrader: (4)

They do suck! 2 of my oem coils failed in under 2kmiles....

BHR kit is ordered

ken-x8

I had the same plan, but the coils beat me to it. I posted the details in another thread, but the effect was spectacular when both coils for the rear rotor crapped out.

Dealer recommended that I not do any mods while still under warranty... three years left on my engine core. New Mazda coils in there now, the latest part number, so they'll tide me over for the next three years. Then it will be BHR.

Ken

nycgps

iTrader: (1)

Stock coils is made by Nippo Denso or some other Japanese company. Not Mazda.

It's fine for me and at around 60 bux (OE-Like) with Lifetime warranty I just don't see why I will go get something else. That's just me tho.

btw OP, you failed, the white spot is not the way to "tell" if the coil is good or failed. but at 45K, I'm willing to bet it failed. you supposed to change them every 30K or so.

supergoat

OEM coils are fine for me. I did the math, for the price of the BHR kit I can buy enough OEM coils to last me over 20 years with the mileage I put on my car.

eternal_gamer

Actually White burn spots through the coil is pretty bad. I know how bad coils look and it's not rocket science to see burns on a coil. I've done plenty of diags in the shop and found bad coils that have overheated and such. And yes I know, they are supposed to be changed @ 30k. But I jus recently bought the car from dealer, so here I am. And tell me where u got 4 coils for $60. Last time I checked it's $200, $50 each. Plus $100 for upgraded wires which comes out to $300. And no I don't use generic aftermarket parts. It's either O.E. or upgraded aftermarket. You get what you pay for.

xexok

I think his main point was he buys the cheap coils once and never has to pay another dime because of the warranty. Sure he has to do the work to replace them but the coils will always be free.

You mentioned changing all fluids to royal purple, I hope that does not mean transmission oil as well.

40w8

Yeah, but this not where to count pennies.

When, you buy cars theirs always $500. or more of nonsense that you have to take because you like the car.

MY OEM coils seemed to work at 23k miles and was very smooth, but the BHR gave immediate kick, and I haven't even put plugs in, yet (next time I use the car I'll put em in).

So I'm not taking chance on: misfires killing cat, carbon clogging seals, wasted gas, and or towing to dealer.

Dealer fees one time to check misfiring or compression will convince you.

Wind Dance

iTrader: (7)

Burn marks are not an indicator.
Limited warranty oe style coils are from advance auto, but are not oem.
BHR/LS2/Yukon coils are top tier.

nycgps

iTrader: (1)

*sigh* no offense but really don't know **** about this car.

burn mark does NOT mean its bad, you can get the same mark in couple hundred miles.

Again, just because it does not have the Mazda box does not mean its "generic aftermarket" parts, very often its the exact same item.

remember I said Mazda is NOT the coils manufacture. Some other company made them, and often these companies have contracts that they can't sell the parts they're making themselves until a certain period of time has pass.

For example, Spark plugs, even my neighbor's dog know its made by NGK, in fact all Mazda Engine plugs were made by NGK. but hey you can't buy RX-8 plugs when the 8 first came out, you can't find them until roughly a year something later. So would you buy NGK part for about 17 bux each? or would you prefer to buy one in "Mazda box" at 40 bux ? In your logic you will buy Mazda's box version cuz "aftermarket/non-OE box" one is crap, right ?

Same goes for Coils, you simply can't find them other than Mazda until about a year something ago. The "Aftermarket crap" that I got has the same part number, same construction, even Made in Japan. without Mazda's double price tag and it comes with Lifetime warranty.

how I got everything for 60? why don't you search ? is it really that hard ?

All I can say is that recently the place I got all 4 for 60 raise their price, from 25 bux to 33 bux each, its still much better than Mazda's price + it has lifetime warranty.

If you feel like to waste money be my guest, but dont' talk **** about things you don't know.

ken-x8

Is it really contracts, or is it the market? There's not a whole lot of demand for third party replacement parts during a car's first model year. When I wanted to do the traditional 1000 mile first oil change for my wife's '86 Accord (first year for that configuration) I could not find an oil filter outside of the dealer. Third party (or even OEM with a different label) parts get more plentiful as the model year ages and more cars come off warranty.

Ken

SayNoToPistons

iTrader: (8)

What are the conditions for the warranty? What requirements must be met in order for them to be replaced by warranty?

1.3_LittersOfFurry

iTrader: (4)

Worked for me lol.

MazdaManiac

iTrader: (3)

Not to try to talk you out of our coils or anything, but we demonstrated and explained why the "white spots" on the coils are meaningless.

5 years ago.

I'm not sure why we bothered, since no one reads.

But, the reasons for acquiring the BHR coils as a replacement over the OE coils go far, far beyond white spots or any other misconceived failure mode.

ken-x8

Yes. My failed coils cost Mazda a $1300 cat, on top of what they cost me.

This dealer is not familiar with your stuff, and I've been very happy with them, so I'll take their advice. But put me down for an ignition kit in July 2014.

Ken

yiksing

Get the BHR ignition, the difference is apparent.

alnielsen

iTrader: (4)

I didn't notice any difference except it idles a little smoother.

eternal_gamer

Whatever u guys wanna say about the white spots is up to u guys. Maybe the RX-8 coils have deep burn spots after hundred miles but from my experience with other coils it does not happen until tens of thousands of miles later. Either way it's not normal having a hole in ur coils. And the coils are original even after 45k miles, so am I still wasting money? And actually I kno that Ngk makes the spark plugs for all RX-7 and RX-8s. And yes denso makes some of the other stuff too but most of the **** u get from autozone and stores alike is not going to be from the o.e. Company. And yes I did a search and I found em for $48-60 each everywhere. But since no one wants to be a nice guy and give me the link then I'm going BHR. Like I said, I like to upgrade broken parts anyways. Are the o.e Mazda coils crap? Yes, if it barely goes past 30k miles, then why is there an argument?

monchie

Oem is just fine with me too, saving money for the future. Good info.

ken-x8

Because this is an on-line forum, and there are certain traditions to uphold.

Ken

Wind Dance

iTrader: (7)

As i have stated before, advance autoparts. $33 each. I'm not going to baby anyone with a link.

nycgps

iTrader: (1)

there isn't any, they don't even know how to check for defects. and if you show them the "white" spots (yea we all know its NOT an indication of the coil's condition), they won't even bother and just issue you a replacement (or refund, if they are out of stock)

I'm still enjoying my O.E. parts with Lifetime warranty, but hey I like to try new things, good and bad, so I might give BHR coils a shot in the future (probably next year)

why ? you never heard of "designed lifespan?"

you can design something that last 5 days or 20 years, it's all up to the OE's original request. Mazda did great back in FC days, their coils (made by Denso) were super humanity good and strong. but when it breaks it will cost you 1000 for trailing and about 5-600 bux for leading, EACH. Do you want that? what if its just "**** happens" and you have to buy a new one ?

FC coils cost too much when new, people complained, and its a problem for Mazda (warranty cost money)

so on FD Mazda "back down" on the coils(it was mounted at a crappy location, limited space, whatever), result? shorter lifespan but "cheaper" when new. Are people happy? I guess. somewhat. cost was like 160 bux each. oh yeah. but it fails much sooner than FC (3-5 yrs the most, compare to 20 yrs)

and this "backing down" on coils/ignition system is not just a Mazda thing, all other manufactures, domestic or foreign are being "cheap" on coils now.

Strangely, stuff I get from Autozone/AAP are usually Denso or whatever, you just need to know what you're looking for, and special order them when needed. You can't do that? that's your problem

*sigh* dont bother man, just don't.

d walker

FWIW On the race cars we use plain stock ignition coils. No issues as yet. I carry I think 3 sets of spares, one set of OE from Mazda and two sets that look like they came from advance. Tried a couple different sets of aftermarket coils on the dyno and there was no difference worth talking about. Until someone wants to prove beyond internet legend that there is an alternative that is worth the money I will continue to use plain vanilla stockers.

d walker

Charles, no offense, but no measurable difference means no measurable difference. I happen to know a little something about ignitions, and I feel very comfortable in saying that other than the life expectancy there is nothing wrong with the OEM coils for 90% of the owners out there. The boosted fellows *may* benefit from an upgrade like a CDI or similar, but maybe not in all cases, I would assert that is a case by case sort of thing.

I know you dont know me, but trust me when I say if I owned a set of your coils I would carry a spare set, period. Its BS like the statements above that keeps people like me from doing business with people like you. When we spend hard earned money to show up we carry spares, regardless of whose products are on the car. Our engine operate at extreme conditions for 50 minutes at a time and thats it. No idling around town, no trips to the grocery, just practice or race conditions. It is completely unacceptable to have an issue with a part and not be able to get it replaced in a very very short period of time.

Couple other things-
A while back all the 2JZ guys were ditching thier stock "crap" coils for the LS1 coil conversions which were the coolest thing going. Wasnt long after when enough sets burned down or caused other issues that (you guessed it) most folks went back to the stock coils.

I designed an ignition system for a 3.4litre Porsche race engine using twin plug heads and COP ignition. for those wondering, thats 12 coils on a 6 cylinder engine. It was based around Toyota Tundra stock coils, chosen because they worked, were cheap, and we could get them at any stealership in the country, which again, is important when you have spent an assload of money to show up at a race track hours and hours from home. Worked flawlessly. Dawe is probably still selling them.
I also developed a COP setup for the 4G63 using a bike CDI and coils that also works flawlessly on 1300+hp engines. That system has now been copied by several retailers and you can buy it off the shelf. I STILL carried a complete setup in my spares box.

Stock coils are working perfectly in our application. We make roughly 225whp/146tq on a stock longblock with exhuast, an tweeked ECU, and intake.
If we needed more, we would buy it,and I dont care honestly, one way or the other, but you can now assure yourself that I will never use your products nor will I ever recommend them.