The guy in the 2nd clip is Valentino Rossi... couple of years of champion in his category of MotorGP 250cc and 500cc. He used to ride a bike, go figure :_:
I would like to seek some other opinion from the turbo otai about this subject. As we know NA car compression ration is about 12-14:1. Bear in mind that is negetive pressure, the most is 0 bar or atmospheric...
Listen to the roars of the Japanese nostalgic cars circling around Autopolis track in Kyushu, Japan. The sound of the high pitched S20 engine from the Nissan GT-R is equally as orgasmic as its modern day...