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Splitfire Coils, Make A Huge Difference

manuel

By manuel,
in Engines & Forced Induction

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usmair Mentor

usmair

Posted
Posted

my old R33 GTS-T had misfiring issues from day one... could not even cope with 180rwkw... Splitfires were the fix for it...

my current car R33 GTR is now putting out 270kw at the wheels with the standard coilpacks... no spark issues at all

"if it aint broke, dont fix it"

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

There is a shortage of hard evidence on coilpacks.

The stockers have the track record.

Splitfires are getting a track record over a few years now.

I have bought a set of Yellowjackets on the basis of bench tests i have seen but they still have to prove the lasting qualities.

The red ones appear to be lesser quality but again time will tell.

benl1981 Grand Master

benl1981

Posted
Posted (edited)

I had a similar issue ~ 18psi (250rwkw mark) and the new coil packs resolved the problem.

Running 18psi initially was ok on the original coil packs, replaced spark plugs, tried the silicone coating which helped slightly but the misfire came back.

Ended up buying the yellow jackets and the problem has gone. When I get new spark plugs I'll buy the ones gapped at 1.1mm (against 0.8mm) now and see if the spark still holds.

Last post in here covered it

http://www.skylinesaustralia.com/forums/Gc...20&start=20

Edited by benl1981
PM-R33 Grand Master

PM-R33

Posted
Posted

Well I dunno what your car setup is, but usually when a person runs an atmo bov on a stock ECU it will run a bit richer on gear change and cause a bit of a pop/backfire through the exhaust.

Galois Veteran

Galois

Posted
Posted (edited)
whats the silicone method? smear house grade silicone around what part of the coil? what are the first signs of missfire on a 25det with only breathing mods that runs std boost?

first signs of a missfire would probably be the missfiring, under max boost between 3-5k rpm, or randomly cutting out and having popping sounds like a wrx until you either turn the engine off or it fixes itself. ive had both.

i was trying to find the coilpack silicon-ing diy but didnt manage it, same principle as these

http://www.skylinesaustralia.com/forums/Fi...=coilpack+clean

http://www.skylinesaustralia.com/forums/Mi...500-t32356.html

Edited by Galois

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