tuning question

The majority of us tune on 86 octane pump gas and race on C12 or C16....I personally do not like biofuels...I just want the purest highest octane I can get....and even use Toluene on occasion.

(2) 660's? 86 jets? Sounds fishy. I would go back down into the high 70's.

Read the plugs and driveability till you get it dialed in unless you have a chassis dyno with A/F logging, local to you.