Spark Plugs quetion
 

i want install next week new spark plugs... i still have Original Plugs in, i want to upgrade to colder ones

now my quetion, which sparkplugs are really good... and which gap i need?

give it some good spark plugs where the gap not must been changed?

my performance mods: STI V2 Wagon with 3 inch Cat-Back, Mines Z4 Ecu, Apexi Intake, FMIC ... soon also catted 3" Downpipe

thanks

NGK PFR7G-11 is a good plug to use & you will need to set the gap at 0.7mm

Phil

give it some plugs what at factory comes with the correct gap?

Eh..?:wonder:

Remember to check/re gap new plugs as they very rarely come correctly gaped..!;)

ahh understand okay.

so whats the best plugs?

We seem to be going round in Circles!!


Phil

Lol :lol1:

How do PFR7G-11's differ from PFR7b's, which is what most seem to use..?

The the 7g is a later design series to the 7b.

Interestingly, some people on here seem to have had problems with bad running/missfiring when using the 7b & have ended up going back to the 6b.

We were recommended the 7g by Prodrive back in the mid ninetys, for use in modded road cars & have never had a problem with it.

Phil

Interesting..;)

Looking at some NGK info on EK9.org (EK9.org: sent wrong spark plugs!!?), the G-11s use a "fine wire nickle alloy centre electrode". The b's are listed as "special design", so who knows what that means..?

The 11 means it's a wide gap (1.1mm) plug with the 7b's ~0.65mm (standard gap).

Might give them a try next change..;)

is there also PFR7G-8's avaible? That it would be a 0,8 GAP... und the GAP dont must be change so much....

still confuse... which plugs i will order...

No you cannot get a PFR7G-8

You need to order a set of NGK PFR7G-11 & set the gap to 0.7mm

Phil