E85 works soo great on turbo cars but in an na set up it really depends on how much timing you need to reach your best power. The cooling effects are what really help w the turbo guys. Generally you wil need to multiply your inj by atleast 30% to have enough fuel. I've heard from a couple diff tuners that although the octane is only around 104 or so, it has the same knock resistance as 116...