Does anyone know the NGK product # for plugs for a boosted b16a2. I know the standard plug is BKR6E-11. I believe this means heat range is "6E", and that a higher number is a colder plug, like "8E", is this right?

 

I'm runnning bkr7es on my d series... thats 2 steps colder if your standard plug is bkr6e then run 8's if you want 2 steps colder

 

I noticed a night and day difference when I put in my 2 step colder NGK's in my old setup. For the swap in plugs which is like 8 bucks is was one of the best upgrades in my kit. Well worth it.