I been using this on my track days. I know for a fact it increases the octane as tested with my knock headphones. I do not however know by how much. I just use it on days where the car is going to be rat bagged for the day. So far so good. This is supposed to go up 7 octane numbers (not points) and is one of the few additves with MMT we have up here.
http://www.hyperlube.com/c3/Max-Octane-c11.html