[R32 Combat]

Since fitting these Spitfire coils, my car has a high load missfire. The STD coils didn't do this. Do I need a different plug gap? They are 0.8mm at the mo.

Thanks

 

[GTR RICH]

Mysterious Pfc Missfire In An R32 Gtr - Skylines Australia

 

[rockabilly]

hi andy, i would concur with the thread above. mine does it on light throttle, both power fc and fc d-jetro versions. gonna try the above fix on page 4. spoke to rod a couple of years back and he said it was a trait of the ecu?. see how we go on.bernie.

 

[R32 Combat]

I've already cleaned up the earth wire on the transistor pack.:nervous:

I'l try a smaller gap, but I really can't see that being a problem.

:bawling:

 

[ExScoobyT]

Tried increasing dwell period? On the AEM with crankPS?

 

[kismetcapitan]

jeebus. my stock coils worked just fine. I have a box of new Splitfires that will go in - I'm praying now. Isn't it just utterly ironic that you fork out a pile of cash, and then they *give* you a problem??

 

[kismetcapitan]

I've already cleaned up the earth wire on the transistor pack.:nervous:

I'l try a smaller gap, but I really can't see that being a problem.

:bawling:

looks like one guy earthed just about everything in sight (ignition amp, and coil pack mounts) directly to the battery. The ignition amp lead is a pretty frail looking piece of wire. It could be broken or intermittently connecting in the loom under all that insulation.

 

[R32 Combat]

I'll have a play on the dyno on Wednesday.

 

[tweenierob]

Just replaced a set of new splitfires with std coilpacks to cure a missifre for someone.

What plugs you running andy?


Rob

 

[R32 Combat]

Interesting, my plugs a Greddy(NGK?) iridiums. I can't remember the heat number.

 

[tweenierob]

Gap down to .65 mate

Rob

 

[R32 Combat]

Cool

How do you re-gap a plug without using a feeler guage? I don't want to scrape off the iridium coating.

 

[tweenierob]

SHouldnt be tight enough to remove any material.

Rob

 

[R32 Combat]

Thanks Rob, much appreciate you advise.

 

[ExScoobyT]

The splitfires on mine would not tolerate more than 0.75mm gap either, even at 1 bar boost.

 

[R32 Combat]

Thats odd, why is that??

 

[kismetcapitan]

interesting...so splitfire coils require very tight gapping? Hope it's worth it.

 

[GTR--J]

I have Splifire coils on my 1990 GTR... with stock boost and NGK platinum plugs gapped @ 1.1mm.No problems at all.The car runs very smooth with these coils.

 

[kismetcapitan]

well, that's the thing - my car ran fine on stock boost with plugs gapped over 1mm. at 1.3bar it was a different story, and when my engine's done it'll be 1.6 on much larger turbos. getting spark blowout is a big concern...

 

[SIHethers]

IIRC splitfires have a longer dwell time/angle than stock, something like 1.7ms vs 1.3ms? There was a post from Hugh from ages ago with the info in.

I would reduce the gap and adjust the dwell angle appropriately.