well i have and will always say that NGK spark plugs are the best

i tend to run copper core vpowers cept on my maxima i run ngk iridium because you gotta remove the plenum to change plugs on it...3 hour job to do plugs!!!

BKR5E-11 is the ngk part number for our vehicles

BKR6E-11 is one step colder

BKR7E-11 is 2 steps colder

 

Yea i got that, but they list like 10 other under the cold area. Im asking which ones are better and will any of them work.
Look at the end of the page

 

they all would technically work but some seat differently and others tend to have a different connector to them

bkr7e is the same as bkr7e-11 BUT the -11 means its already pregapped to our gap (which is why i run em makes life easy just install and go)

 

Sweet, sounds good enough to me. Can you run a colder plug on a stock setup?

 

definately i would run my wagon daily with 3 step colder plugs....

 

Oh, snaps, time to get shopping soon. Gunna have to start with Maximum boost and do some reading. Already got the beta in but it must have more power. Also, is there a way to make the blow off valve silent or as close as you can get to silent? I don't need the freakin berries lightin me up when it blows.

 

run a recirculated BOV.. not an open atmosphere bov.. it will quiet it down substantially.. basically a diverter valve like vw/audi.

it runs the open end of your BOV back into your intake piping.

some BOVs come with the option for a provision for fitting that recirculates.