i'm about to get my car tuned in a few weeks, and i was wondering if i should go to a two step colder plug.........and if so, does anybody know the NGK# for the two step colder plugs?

 

https://my350z.com/forum/showthread....wo+step+colder

 

1 step colder is what I use...I have TT and N20....I saw in your sig that you have TT and N20 also..how big of a shot are you spraying?

 

One step is what I've always seen recommended by most tuners. It's what I went with. I've heard that two step seem to foul quicker.

 

well, i had nitrous and i was planning on spraying a 50 shot, but the shop that i had my car at got broken into and they stole my bottle and my purge........so i'm waiting to get it all back..........i was planning on changing my sig until i get it back.......do you know what the 1 step colder NGK# is?

 

Lfr6aix-11