hahaha.
to the people that said the cyclone thing makes the noise - thats wrong. a freind of mine has it and it makes no diff in the noise.
sohc makes more torque??- well maybe in some cars but not in hondas and obviously not nissan. ^
i saw dekawns engine today with my secret x-ray goggles.
hes got a 3 cylinder geo metro motor attatched to his intake piping shoving air into his motor. that explains the weird whistling sounds.