Originally Posted by dave_y
my car is mapped for Optimax, i only used octane boosters when i have to use normal unleaded.
bit of a gimmick IMO that they make your car faster etc.
That's actually not quite true, although the difference is marginal.
Increasing the Octane alone won't make much of a difference, but the improved Octane would allow you to run more Ignition advance before Detonation occurs.
Obviously most of us aren't really in a position to take advantage of this.
Obviously Race-fuel is a 'proper' way to do it, but not practical!!