Ok so soon im going to the track and im not sure which route I should go. Ive used a mix of E85 before, 5 gallons E85 and the rest 91, with great results. The car felt like an absolute monster when I used the mix along with meth. When I did that I was at a 51 additive for meth. Now I have an option to use race gas MS109. Now I ask this question because a friend of mine has ran MS109 with a 70 meth additive and had great results but has not used E85. I guess im just looking for some opinions on what might/will have better results. If you've used both your opinion is appreciated.
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