wow, i would have expected more out of that e3. I suppose the swirl messes them up... I wonder if they would do better in an older carberated sbc. Before swirl was a major part of head designing. I do know they do well in smaller engines like lawn mower engines... I suppose they dont have swirl like in a newer car motor. Btw these are assumptions so dont go quoting me, lol. Any other ideas?

 

I saw that too....I don't understand how its not missing. Normally if you're boosted you won't run anything but copper based plugs is what I've seen.