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...