Back in 2004, My two buddies, one who owned a 2003 G35 coupe with only an intake mod, wanted to see how it would hold up to my other buddies 2000 M3 roadster.
They took the two cars to the drag strip and the 2003 G35 won by two car lenghts... they gave this a couple tries, and it was the results the 3 times they tried.
A month later the 2000 M3 wanted a rematch. So away they went to the drag strip, but this time the M3 had 100 or 104 race gas, I cant remember. However no one knew he had put race gas in, he just told everyone he added a intake to the car.
Low and behold... the M3 beat the G35 by about two car lengths.. everyone includeing myself was pretty shocked... back then in 2004 we had only heard of the Subaru's having ECU's (stock) which would advance timing to better gas..
Point of this story I've seen it myself with M3's and Subaru's so I believe it..
I can't wait to try this myself.