hi, im thinking of installing NGK Iridium spark plugs to my 04 wrx ( prodrive) has any one fit these and give me any feed back
cheers

 

If they're denso/hks id inadvise, electrode tips have been known to break off and kill said engine.

Ngk on the otherhand have been superb, car fires up fine every morning, can be a bit grumpy when cold but that just tends to be a scoob trait anyway but once warmed she flies along.

 

Sorry to hijack but im thinking of fitting some ngk iridium plusg as the ngk pfr7b's i have now gapped to 0.7mm are causing a missfire at 1.5+ bar boost,they just seem a bit pricey at £25 per plug.

 

You can buy them on ebay for much less.

 

I got a set of NGK iridiums for about £45... sparkplug.com I think was the place....

Simon

 

These are typically what you'd run on a classic sti and ran fine when mine was a standard wrx, as you can see by chasing the exact type you get much better prices.

hth

eBay.co.uk - BKR7EIX items at low prices

Those plugs work on all models iirc.

 

https://www.scoobynet.com/general-te...gk-sevens.html

 

allways had irridium from graham good , no probs

 

Hi
though Im new to scooby`s , do have some experiance with plugs after having had a cosworth running 28 psi of boost and race bikes, Cant go wrong with NGK plat`s,Make sure there gapped properly and you should not see a problem .
I never had a plug failure. cossie or bikes !!
Regards Matt

 

ouch 45 squid give as performance a ring they can sell you them for a lot cheaper than that ,

 

I got a full set of NGk for £23 off ebay last week

 

Beeston Motor Spares in Leeds (Well, Beeston really...) sells them for £34 for four if you are anywhere near them it's worth a trip down