so my coils are dying... - TriStateTuners.com :: Home of Tristate Auto Enthusiast

NOPSTNS · 08-18-2007, 01:37 PM

yeah um, took a visit to rt tuning, spun it on the rollers, it pulls all nice and linear just as a N/A rotary does then some point just after 7k the power trails off then the lines get all squiggily and jagged edge lookin then the power at 8500 (its peak) is 25 whp shy of normal....its makin more power at 7k than it is at 9k....thats not normal....

doing some research leads me in the direction of the coils taking a slow and painful dump....some rx8s have had their coils replaced and there is an updated part number and all so there must have been an issue with a few of them so i kno ill have them replaced but im just curious on the aftermarket side....

this is the first problem ive had with this car and im actually pretty surprised....

thus brought me to the normal Q we all have when replacing an oem part...are there aftermarket versions?

anyone have high performance coils? are they able to still spark at 10,000 rpm?

EvlEgl · 08-18-2007, 01:55 PM

I'm lost...

06evors · 08-18-2007, 02:03 PM

Was that your car on the rollers on Tuesday at R/T? I was there picking up my Lancer, clean RX-8 if it was yours. An answer to your question would be search "Okada coil packs".

xEJ20x · 08-18-2007, 02:08 PM

Check over at Racing Beat.
They may have something.

NOPSTNS · 08-18-2007, 02:10 PM

yeah bro that was mine....pat ran it on the dyno and the both of us were like wtf the power is trailing off. we were blaming the heat but i think theres more to it, i looked up the coil pack failure and its not as uncommon as i thought. there's a tsb (technical service bulletin) describing how mazda wants them diagnosed. seems that some techs were puttin whole engines in rx8s due to lack of power when in reality it was the coils! d'oh!

okada....ok, ill check it out

Raven18940 · 08-19-2007, 08:05 PM

At least your coils don't cough (misfire) a few times then just give up all at once, dumping fuel into the exhaust destroying your cats. Damn SAAB direct ignition.

I'll suggest the saab fix, how are your plugs and have changed them lately?

**TROLL** · 08-19-2007, 08:09 PM

i wouldnt try too hard to stray from oem, especially if its under warranty. let us know what you find and what you decide to do though...

Silverfc88 · 08-19-2007, 08:19 PM

I would stay with OEM coils also. I'm not to familiar with the RX8 ignition, but I know some 3rd gen guys change there leading coils to 2gen RX7 coils. I run colder plugs in the leading holes and I also have a Jacobs FC1000 CDI.

How old are the plugs?

NOPSTNS · 08-19-2007, 09:37 PM

plugs have 7k on them, i change them every 20. i hooked up a timing light onto the wire for each coil (coil near plug ignition) and slowly brought up the revs and once it got past 7 or 8 the light would go out and on strangely, before7k the light would speed up and then go to striaght on. after 7k the light would blip off pretty often. checking the trailin coils and they would light on the way they should but both leading (espeically for R2) would be coughin out on me.

i will be stayin oem bc its still warranty and coils are wicked easy to reach and replace but was just curious if there were other coil offerings. leading and trailins fire diff times and those multi spark discharge systems worry me.

ill be swappin coils with a stock car someday soon and see how she runs.....if it runs better (and i can watch the misfires on the laptop we have) then ill kno to order me some coils...

i love working as a tech for mazda, muahahahahahahahahahaha

su_maverick · 08-20-2007, 03:37 PM

Yeah, the only reason I would go aftermarket coils is if you were planning on reaching for the sky with your revs. It just sounds like the coils aren’t refined enough to generate the timing you need at higher RPMs and they start messing up. Good luck with the fix though.

08-18-2007, 01:37 PM	#1
NOPSTNS Tri-State Post Whore Join Date: Dec 2006 Location: Los Angeles, CA Member #3176 iTrader: (0)	so my coils are dying... yeah um, took a visit to rt tuning, spun it on the rollers, it pulls all nice and linear just as a N/A rotary does then some point just after 7k the power trails off then the lines get all squiggily and jagged edge lookin then the power at 8500 (its peak) is 25 whp shy of normal....its makin more power at 7k than it is at 9k....thats not normal.... doing some research leads me in the direction of the coils taking a slow and painful dump....some rx8s have had their coils replaced and there is an updated part number and all so there must have been an issue with a few of them so i kno ill have them replaced but im just curious on the aftermarket side.... this is the first problem ive had with this car and im actually pretty surprised.... thus brought me to the normal Q we all have when replacing an oem part...are there aftermarket versions? anyone have high performance coils? are they able to still spark at 10,000 rpm? Last edited by NOPSTNS; 08-18-2007 at 01:40 PM.

08-18-2007, 01:55 PM	#2
EvlEgl Tri-State Post Whore Join Date: Feb 2006 Member #1412 My Ride: 2010 Hyundai Genesis Coupe iTrader: (0)	I'm lost... __________________ 2010 Tsukuba Red Genesis Coupe 3.8 2008 Kawasaki ZX6R [FRSH]

08-18-2007, 02:08 PM	#4
xEJ20x Tri-State Post Whore Join Date: Jan 2005 Location: South Jersey Member #72 My Ride: 13 STI iTrader: (3)	Check over at Racing Beat. They may have something. __________________ Nothing to see here.

08-19-2007, 08:19 PM	#8
Silverfc88 Tri-State Post Whore Join Date: Jan 2005 Location: NorCal Member #126 My Ride: 88 RX7 TII, 2012 WRX hatch iTrader: (5)	I would stay with OEM coils also. I'm not to familiar with the RX8 ignition, but I know some 3rd gen guys change there leading coils to 2gen RX7 coils. I run colder plugs in the leading holes and I also have a Jacobs FC1000 CDI. How old are the plugs? __________________ formerly 95nracer Instagram @Silverfc88 11.6@123mph Streetport 13bt, Haltech Sprint RE, FIC 1150cc + Delphi 1000cc injectors, Walbro 255, Borg Warner s360 .88, HKS mani, JGS 50mm, Greddy FMIC, HKS Twin Power, AEM water/meth inj

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08-18-2007, 02:03 PM	#3
06evors Tri-State Addict Join Date: Apr 2007 Location: Warminster, PA Member #4563 My Ride: 00 MX-5 LS iTrader: (2)	Was that your car on the rollers on Tuesday at R/T? I was there picking up my Lancer, clean RX-8 if it was yours. An answer to your question would be search "Okada coil packs".

08-18-2007, 02:10 PM	#5
NOPSTNS Tri-State Post Whore Join Date: Dec 2006 Location: Los Angeles, CA Member #3176 iTrader: (0)	yeah bro that was mine....pat ran it on the dyno and the both of us were like wtf the power is trailing off. we were blaming the heat but i think theres more to it, i looked up the coil pack failure and its not as uncommon as i thought. there's a tsb (technical service bulletin) describing how mazda wants them diagnosed. seems that some techs were puttin whole engines in rx8s due to lack of power when in reality it was the coils! d'oh! okada....ok, ill check it out

08-19-2007, 09:37 PM	#9
NOPSTNS Tri-State Post Whore Join Date: Dec 2006 Location: Los Angeles, CA Member #3176 iTrader: (0)	plugs have 7k on them, i change them every 20. i hooked up a timing light onto the wire for each coil (coil near plug ignition) and slowly brought up the revs and once it got past 7 or 8 the light would go out and on strangely, before7k the light would speed up and then go to striaght on. after 7k the light would blip off pretty often. checking the trailin coils and they would light on the way they should but both leading (espeically for R2) would be coughin out on me. i will be stayin oem bc its still warranty and coils are wicked easy to reach and replace but was just curious if there were other coil offerings. leading and trailins fire diff times and those multi spark discharge systems worry me. ill be swappin coils with a stock car someday soon and see how she runs.....if it runs better (and i can watch the misfires on the laptop we have) then ill kno to order me some coils... i love working as a tech for mazda, muahahahahahahahahahaha

08-20-2007, 03:37 PM	#10
su_maverick Tri-State Addict Join Date: Apr 2006 Location: Bergen Co. Member #1755 My Ride: 2001 Saturn SC1 iTrader: (0)	Yeah, the only reason I would go aftermarket coils is if you were planning on reaching for the sky with your revs. It just sounds like the coils aren’t refined enough to generate the timing you need at higher RPMs and they start messing up. Good luck with the fix though.