Dai_STi

Hey guys hope you are all well 🤙

I've just been doing some research on spark plugs, what would you guys recommend? I know you can get different temp rated plugs ect.

Also my car misfires when cold, but when its warm it runs faultlessly. I've had live data up on cold start, with the roughness monitor data, cylinders 2,3 and 4 are 0 which they should be. Cylinder 1 peaks at 28, go for a drive for 15 mins or so and drops down 0. I've got superfire race coil packs with denso plugs? I'm starting to think its to do with the plugs.

She's going for mapping on the 16th Dec and I want it to be perfect.

Any help would be appreciated, many thanks in advance
Dai

jaygsi

iTrader: (46)

Yea I'd swap too NGK, i had a slight misfire on denso's once, but i could of been the coil pack, as replaced that aswell.

Dai_STi

Thanks man, will give that a go 👍🏻

prodrive.greeny

iTrader: (3)

I've been searching today too and found a few threads, essentially if its a stock engine with no major mapping then standard issue plugs are what you need: Part Number - NGK SILFR6A6 (8659). If you have forged internals and remap for more power then NGK ILFR7F (5245)

prodrive.greeny

iTrader: (3)

I've just fitted the SILFR6A6. The ones which came out were SILFR6A. Reading into this it appears the SILFR6A6 supersede the 6A's;

Old -


New

Dai_STi

I just bought the ones you recommended for forged internals and she's going in for a map next Wednesday?

Cheers for the help

prodrive.greeny

iTrader: (3)

That rear plug on the nearside is an absolute bitch isn't it

Dai_STi

Yeah man, especially with a front mount lol 🤣