Which is why I always run 100-octane (RON) on the track - it gives the WCU the best chance of maximising torque (and hence power).
We can get 106 Octane (RON) ELF racing fuel (Formula 1 stuff), but it is $A6/litre .... our Formula Ford racers swear by this stuff as it gives them a 2mph advantage at the endof any logn-sih straight and that in FF is a mssice advantage.
However, I am too tight to spend 6 bucks/litre on track day fuel in what is actually my daily driver ..
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