Sparkplug? which is the best?
 

what kind of sparkplugs are you guys using on your wrx n sti?

Denso iridium usually foul on my sti but m using a 8 heat range.

would like to have some of you guys input :thumb:

There have been a few cars that have dropped the tip off an iridium plug and damaged their engine.

NGK PFR 7B Platinum plugs.

Same here

recently put a set of these in my STI and the car feels much smoother

Great news about the NGK7's, ordered some last week :thumb:

NGK PRF7B's..;)

Infact I could do with changing them..! How often do you guys change tham..?

GAZ how much have you just paid, if you don't mind..?

I haven't got them yet, as i'm waiting for my new turbo to come in stock. :norty: (ScoobyMania), but they were £10.50 + VAT

where do people get 8's from?

Or 9's, heard they're cheaper than 8's?

suits me.....where are they?? :p

I take it that's £10.50 each..?:wonder:

Just about to order a set of 4 via scoobyshop for £35 delivered, which I thought was good..?! My last lot were over £40 from Sparkplugs UK - Champion, Denso, Beru and NGK sparkplug suppliers.

How often do you guys change them (mildly modded 05 WRX 348x333)..?

Sorry, yeah, £10.50 + vat each. I was ordering other parts from them, so it was easier and saved on additional postage.

This is the first change for me (STi @ 20k miles), and only because i'm doing other modifications, turbo etc... and it was recommended by the mapper (Andy F).

Its worth cleaning before change intervals IMHO

I think a GB on plugs would be a good idea... we're all always in the market for them so why not buy in bulk and save a few quid?? :D

I'm not volunteering tho! :cool:

The thing is they're £35 inc delivery via scoobynet shop, which IMHO is good..!:) I've emailed the supplier to see if there's any more to be had via a GB..;)