what plugs and gap should I be running for my boosted sohc D16Z6?

 

Ngk BCPR7ES-11 is what most people use. I run BKR6E's myself, its the same but with the v-groove in the center electrode. I've found the 6 heat range to work better at 5-8 psi. It seems like the 7's always look a little fouled, like they are too cold.