I had about 10 litres of 109/98 mix this morning and decided to head over to auburn to see if I could get a dyno and find out the real difference. No-one was there so turned around and went home.
Anyway, Olympic Pde was great spot to open it up a little and it was certainly noticeable. I guess its actually the altered boost settings etc that are making the extra power but I can only run them with this fuel so, it gets the credit.
My cobb played up a bit a few weeks back so I havent touched it since.