bump

 

I don't even see 5311's on the NGK website?

 

I use bkr9eix. It's probably over kill for my setup, but it works fine.

 

i run denso ik24 at 7 psi just put in ik27 as im stepping up to 3.6'' pulley or 9-10 psi redline 8950 rpm. they run fine even in the cold have 8000 miles on the ik24s no problems just wanted to read the ceramic better so new plugs and with the higher boost i figured 1 step colder wouldn't hurt.

 

Agreed and I would gap to 0.035"

 

ah woops! i was looking at denso 5311