Mclaren has a software update that prevents revving over and over again in neutral.
FYI, the update only affects car while it is in neutral (it gives the car a low RPM redline that it won't go past, around 4-6k depending on mode). Flames still happen as before when car is being driven. You just can't rev it up while in neutral, which means no joining in with the Civic rev battles at the local C&C....em to be douch-ey, the flames pop up when on track at night, and also when downshifting when driving in general (albeit a little aggressively and the engine has to be hot). It adds a little j' ne se