I think he means 100LL as a lot of people say that is 104ish octane for automotive motors. Avaiation must use a different measurement?
My idea of running a timing key. I have no offical testing but think by pulling the timing on the top I now can run way less octane which really wakes up my bottom end. If I do lose a little power on top I can just bump up the boost a little.
I have been running 11 psi with ho head and timing pulled back on top at 7000-8000 ft. I have been weening it down to about 40% 100LL I havent hit the knock sensor yet so I will keep taking the 100LL away. Maybe I dont need any up at that alt. because in ND I have been running 10 psi with 50/50.
What my butt sensor tells me is my bottom end is far better with the timing pulled and less race gas in the tank. Even if I did lose a little on top I think I like this better. I have plenty of power anyways I like the rippy bottom end for tree riding, creek bottoms and hitting drifts.
With the comments on here to go back to stock timing I am starting to wonder if I am missing somthing? IDK?????