I run rn12yc champions. Would rn10yc colder plugs help? Still need to run only 93 premium fuel to see if any difference. Also considered cold air to carb. Now just sucking hot air in hood area.
Find out what your cranking pressure is FIRST, before you make any changes. Remember what I said in my first post? NO AMOUNT of advice will be correct until we have all of the info. AJ is slick, but he ain't gotta magic wand or a crystal ball. Get us the cranking PSI number and we can really get down to it then. Not just one one but all 8. I know. It's a pain. But you will thank me in the long run, I promise.
