almost everything you hear from the Porsche is the gear whine, its relativly easy to change it in the Shift-A menu, but you need a wav file with the sound. Try recording it with Audacity or a similar audio recorder.
Yes loud gear whine, not so loud engine than that piepsen da, kp was das ist ^^ Can maybe do that for me? Really noob in this :P
I have given it a go for you! Hope it's the kind of thing you are after. http://www.lfsforum.net/showthread.php?p=1169015#post1169015