if you have a computer controlled car it will take advantage of the 93 octaine and give more timing which will give more power but if can run full timing with 87 octaine then switching to 93 will give no power gains
if you have a computer controlled car it will take advantage of the 93 octaine and give more timing which will give more power but if can run full timing with 87 octaine then switching to 93 will give no power gains