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

 

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.

 

Thanks man, will give that a go 👍🏻

 

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)

 

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

 

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

Cheers for the help

 

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

 

Yeah man, especially with a front mount lol 🤣