I did some searching and I couldn't find a good gap for my exact application so I need some help.

I just recently ordered: Denso Iridium plug IKH24 (1 step colder plugs for Evo IX)
Im running HKS DLi2 Ignition, 50/50 Meth/water, and c16 occasionally (once every 2 months MAX), GT35r Turbo, 450 whp on pump and meth, and over 520 on c16.

 

bump

 

What have you been using? I'd start with a .24 and if the car doesn't like that shoot for a .22

 

I agree with the .22. This solved some pretty bad break up issues for me under heavy boost.

 

k cool thanks guys ill test them out

 

.022 worked for me