Yes Ian, I remember now that you explained this a few times.I understand what you are saying.
I do "seem" to have a bit more "oomph" with the 97 octane.It doesn't seem to need as heavy a hand on the throttle.The 95 "seems" to need a very little bit firmer twist.That could be imaginary though.
I'll need to do a bit more experimentation I reckon.
