First plug change.

512Stroker said

I hear ya YR
But look at the second batch of plugs and then look at his text where the OP talks about his AFR readings IMO those readings look lean. I normally dont go by electronic AFR measurements, as being an old Engineering dept dyno Tech I do know how off they can be if not calibrated properly.
Well If he knocks a hole in it we'll know.
I hate living on the edge, there's no place to sit. LOL

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Thanks. I agree, however it's the mid/upper rpm area that I want to richen up. The idle/off idle I'm good with, I don't mind running on the lean side down low as long as the power's still there. But yes I think it does want more moving up especially at WOT. Honestly after my full blasts and seeing the plugs I'm very happy to see or hear zero signs of detonation!
And I'm for sure not living or dying by the gauge numbers, just seeing how it's readings match the plugs. Fun stuff!