Im getting my car tuned at the end of the month and was wondering what plugs I should use for a single turbo looking to make low 400's.I have researched a little and havent found what I was looking for I currently run 9's in all 4. will the 9's bee good for this power range on pump gas. 15 pounds of boost. Please dont flame me I have looked threw countless posts.

 

https://www.rx7club.com/showthread.p...ighlight=plugs

https://www.rx7club.com/showthread.p...ighlight=plugs

I found these in the single turbo section.

 

Thanks Jim That was exactly what I was looking for earlier and dint find. I guess I was searching the wrong section.