Standard plug for V35 NGK PLFR5A-11
Stock Iridium is LFR5AIX-11
Colder Ir is LFR6AIX-11
With NGK the higher the # the colder the plug.

http://www.ngk.com/results_app.asp?AAIA=1430929

 

there you go.

http://www.forgedinternals.com/store...cat=264&page=1

 

yeah I have NGK PLFR6A-11, 1 step colder

 

Yes PLFR6A-11 is the right number, I have them in mine. They are the NGK Laser Platinum plugs.

 

Anyone know of a good Canadian source for these plugs?

 

www.clubplug.net

i get 5% from your order if I refer you. if you'd like to thank me for getting you this site, PM your email and name and I can forward you a link. one member helping another

best prices on the internet.

$6.87 ea plus $8.95 shipping. So you can get 6 for about $50 shipped.

 

They'll get rid of that annoying PING!!!! Performance...... nothing really.

 

Yes. You listed plugs that are one step colder and 1 in Platinum and the other is Iridium. To make a long story short...... Platinum is used for longevity and are idea to use in difficult firing situations. They also have tendency to pre-ignite, hence giving you ping. Iridium on the other hand is less prone to pre-ignite but will foul quicker than Platinum. As for one step colder, all it does is not sit so far down into the head and heat up as much during "hard driving" as the standard plugs. If you heat the plugs more than designed for (IE F/I Nitrous) they tend to misfire and cause things to go boom. Yes there is a performance change but it's very minimal. Nut shell answer. Hope it helps.