Spark plug heat range

quatrini

Registered User
What heat range plugs are you guys running with your raised boost setup? I have ngk ix iridium factory replacement spec gapped to .032" and am running 9.0:1 compression ratio with 15-20% overdrive.
Will my spark plugs work?
 
That's what I started with but I don't recommend them. I now run ngk tr6. I dont love them but they are ok. Gapped at 0.035 i believe.
 
Thanks for the quick reply. With that being said i have a set of brand new untouched ngk ix iridium plugs for sale!
 
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