Originally Posted by ianto303
Hey guys, I drive a stage 2 2011 sti. Dp and accessport. My car is not tuned for e85 but I heard it was safe to add e85 as long as you put the right ratio or just not too much. Is this perfectly safe without any damage to the car? Does anyone do this? I heard it can give you a Lil more power and the ratios I was hearing are maybe 60% 91 Oct and 40% e85 or maybe 50-50. If anyone can please give me more info I'd appreciate it I wanna give this a try.
for octane boosting is cool, but not 60/40, not even 80/20. I'm talking like 97/3! 105 octane (e85) will boost the crap out of 93 in a flash, no need on the regular.
I would only do this if I had a track day or was beating the piss out of her.