Rb25 Engine Coil Pack Cover

[jjman]

yeah ok i see your evidence on the debate. But the other half of the skyline/tuning group puts the tick in the splitfire box. So ill concede that the jury will forever be out deliberating on this one...

[SargeRX8]

u for real? whys that?

splitfires are known to be able to perform better, esp under higher stresses/hp.

Exactly how does the power you put out at the wheels affect your spark capability? Your spark is affected by boost, thats it. Splitfires are designed OFF OEM coils and are designed to be cheaper. There is a reason Nissan charge a big penny for them. I run a 1.1gap with my brand new OEM's and they RARELY miss. This could not be done with brand new yellow jackets which actually do have similar performance to Splitfire but don't last as long.

Just for the sake of giving an example, I can run 30psi through my motor, pull every bit of timing out to create hardly any power, the spark will still blow out thanks to the boost. Heat kills them.

Edited December 19, 2011 by SargeRX8

[Hanaldo]

You should note that is the experienced users who are putting their money on the OEM's.

[Hanaldo]

Exactly how does the power you put out at the wheels affect your spark capability? Your spark is affected by boost, thats it. Splitfires are designed OFF OEM coils and are designed to be cheaper. There is a reason Nissan charge a big penny for them. I run a 1.1gap with my brand new OEM's and they RARELY miss. This could not be done with brand new yellow jackets which actually do have similar performance to Splitfire but don't last as long.

Just for the sake of giving an example, I can run 30psi through my motor, pull every bit of timing out to create hardly any power, the spark will still blow out thanks to the boost. Heat kills them.

Does that mean that they occasionally do?

[75coupe]

hmm I have splitfire coil packs and run 21psi and NEVER miss... sound better than your rarely miss...

I dont run a coil pack cover, I do have a vented bonnet but I would never let water get in the coil pack valley, thats just asking for trouble

Ive read your with yellowjackets sargerx8, but seriously they are know not to be consistent... I bet you have actually never used splitfires.... your just sayin what you have is the best right solution right???

yellowjackets are just another cheap part solution...

[Hanaldo]

hmm I have splitfire coil packs and run 21psi and NEVER miss... sound better than your rarely miss...

I dont run a coil pack cover, I do have a vented bonnet but I would never let water get in the coil pack valley, thats just asking for trouble

Ive read your with yellowjackets sargerx8, but seriously they are know not to be consistent... I bet you have actually never used splitfires.... your just sayin what you have is the best right solution right???

yellowjackets are just another cheap part solution...

He has OEM's ^^

And he is running 1.1 plug gap with a Hypergear turbo, I certainly couldn't do that with my Splitfires.

[75coupe]

He was using yellowjackets..

and still running less power than I do with splitfires... where is the performance increase...

I havnt found any problems with splitfire coil packs, OEMs are possibly just as good, but I dont see many thread saying splitfires arnt as good as OEM...

either way, coil pack cover off with stock bonnet is fine...

[89CAL]

Splitfires were cheap when I bought them. Never missed a beat. Have never had my coil cover off, have a carbon fibre one now anyway so I'm not gonna be leaving that off lol

I dont see any problems with having it off, unless you are getting a lot of water in there from a vented bonnet

[SargeRX8]

hmm I have splitfire coil packs and run 21psi and NEVER miss... sound better than your rarely miss...

I dont run a coil pack cover, I do have a vented bonnet but I would never let water get in the coil pack valley, thats just asking for trouble

Ive read your with yellowjackets sargerx8, but seriously they are know not to be consistent... I bet you have actually never used splitfires.... your just sayin what you have is the best right solution right???

yellowjackets are just another cheap part solution...

I can run .8gap and never miss. Hell I can even run 1.0 and not have a miss but I was in a rush to get these plugs in and didn't have the time to sit there and tap them shut. They perform so well that I will not be regapping them, just replacing them at the end of their 10000km cycle. My turbo on 20psi will flow more air than your turbo on 21psi. I don't say what I have is best, I vouch for what I have either tried, experienced or tested. I don't take stabs in the dark. I can say that my yellow jackets performed fine, but didn't last long at all. I can say that these OEM ones are better than my old splitfires because I was running 17psi on my old car with a 2835 and would get a miss with anything above 1.0gap. I will say these OEMs are doing a near perfect job and running almost triple stock boost, I don't miss that often. Not enough for it to be a problem, not enough to dedicate 15 mins to pulling them out gapping them and putting them back in.

I think for the price I payed for my OEM coils and the fact others can get them for the same price, you would be half minded to go with any other choice. How long do splitfires last? Ive heard of them failing after a couple of years, sometimes earlier. Read about it on different cars etc. These Nissan units have lasted 20+ years and hell even my old OEM coils ran a .9 gap just fine.

Weigh up the prices you can get OEM's vs splitfires. Weigh up the age in which each coil pack is known to fail. OEM units aren't "as good" they are simply better. Splitfires were just a cheap replica. There are more threads suggesting OEM is better than aftermarket, none on my watch showing the other way around.

[75coupe]

woah, 'My turbo on 20psi will flow more air than your turbo on 21psi' where do you get that crap from????

Why bother running larger gap on your plug? what benefit is there? power made is power made, people dont say oh my car can do 0-100kph in 4secs with a plug gap of 1mm, who cares what plug gap you use, its the torque the engine makes thats important....

OEM coil packs are possibly just fine, but splitfires seem to be just as good from most peoples experience, my have lasted over 4.5years with no signs of problems...

[Hanaldo]

OEM coil packs are possibly just fine, but splitfires seem to be just as good from most peoples experience, my have lasted over 4.5years with no signs of problems...

When they have lasted 15+ years, then you can start drawing comparisons.

Anyway, this has gotten way outta hand lol. Nobody ever said Splitfires aren't great coils, they are. I simply said that IF Splitfires and a set of brand new OEM's were the same price, I would go the OEM's every time.

[75coupe]

I agree Hanaldo... but unfortunately not everyone thinks that way...

sargerx8 has stated

'can say that these OEM ones are better than my old splitfires'

'OEM units aren't "as good" they are simply better. Splitfires were just a cheap replica'

with no actual fact to go with the statement just personal experience which is flimsy at beast to be honest

[SargeRX8]

I agree Hanaldo... but unfortunately not everyone thinks that way...

sargerx8 has stated

'can say that these OEM ones are better than my old splitfires'

'OEM units aren't "as good" they are simply better. Splitfires were just a cheap replica'

with no actual fact to go with the statement just personal experience which is flimsy at beast to be honest

I actually read on here that the splitfires are replicas of the genuine OEM. I don't come up with fairy statements or figures. I read what I see and write what I read.

I am not saying splitfires are shit, or not up to the job or up to par with OEM, I was saying that right now there are a few sets of OEM coils in the for sale section which are half the price of splitfires and if you can get your self a set or in the market, you would be silly to consider anything else. $350 I payed for 6 brand new OEM coils for my series 2.

I posted my opinion about my experience. These OEM's are performing better than my old splitfires. What's wrong with that? I have also read in MANY places on this forum that if you can retain the original gap, you will have a greater cylinder combustion as the spark is larger and than .3mm difference makes a difference. I can't say I notice it but its the same way people say you need an box around a pod. Means jack shit. I ran a CAI system feeding cold air from under the car, made sweet f**k all difference when the box was removed. That is my opinion and my finding and there is NOTHING stopping me from say that.

Your HKS 2835 is a 420ps turbo. Mine is 430ps at lower boost. Mine flows more air.

[75coupe]

'Splitfires were just a cheap replica' - no actually they are a more expensive replica...

and you also stated

'OEM units aren't "as good" they are simply better'

I agree they both do the same job.

Ive never reduce the gap on my plugs and I still make more power, sooner than you with your OEM coilpacks and supposedly large spark gap...

[SargeRX8]

'Splitfires were just a cheap replica' - no actually they are a more expensive replica...

and you also stated

'OEM units aren't "as good" they are simply better'

I agree they both do the same job.

Ive never reduce the gap on my plugs and I still make more power, sooner than you with your OEM coilpacks and supposedly large spark gap...

Why are you taking my words out of context? They are a replica of the OEM's. They are cheaper than the OEM's, they are a cheap replica.

The last statement was a theory I read. The larger gap will help to burn more of the air and fuel in that stroke. Not something I am for or against, but something I read, and if it does, I want in on it.

[89CAL]

A 0.8 gap will be plenty enough spark. With the larger gap you run the risk of blowing the spark out, or not having a strong enough coil pack to power across the gap. If the larger gap works, then thats fine, but nothing wrong with running a slightly smaller gap

Splitfires are replicas of OEM's, well of course they are, there would be no point making them different so you hav to mod your car to fit them. OEM's are fine, If you can get brand new ones, buy second hand ones and you could end up buying coilpacks on the way out and have to buy another coilpack or set.

I've run Splitfires with 0.8 gapped copper spark plugs for the last 2 and a bit years, never ever had a miss running 18psi all day every day for the last year