Quote Originally Posted by Doomer View Post
Bikes have very hi compression engines by comparison, usually 11-13:1.
My car has 12:1 compression, yet there is no performance gain from gas above 93 octane . The ecu is not programed too adjust to anything higher . I have yet to get any engine knock from 93 octane .

The VX always gets 87 octane . Now if it was super charged I would definitely try higher octane gas.