Quote:

4. Added 5 gallons E85 ( 110 Octane )to 10 gallons of 91 octane
5. went up 2 heat ranges on my plugs

I will before the pinging tears the motor apart for me.

I'd suggest forgetting the E85 & put several gallons of race gas in per tank & adj your proportion from there and go back to your colder plugs if they were in the ballpark correct range (& I'm assuming they were close)

live every 24 hour block of time like it's your last day on earth