The guys at Performance Carb who built 2 carbs for me told me there is nothing to gain @ 11.5-1 CR. There is a learning curve with tuning and your carb once set up for E-85 can not go back to gas. Passages need opened up for the alcohol.
Cost 400$ to have your carb redone for E-85.
Now if I was 13-14 to 1 its a different story. Well worth it vs the cost of race gas.
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