Hey everyone, so i just got my first evo the other day and had a quick question. Currently the car is tuned on 93 Octane but where i live there is only 91 available. I plan on converting to e85 in the very near future. Is it ok to just run 91 for now or should i push the date on the e85 conversion to as soon as possible?
Thanks!

 

I would say E85 ASAP because you will have a lot of knock on 91 and could destroy something unless you are tuned for 91 in which case you are now..Be easy on your car until you tune it

 

meant to say you are not