i've been listening to some sound clips and i've also downloaded some media clips of the greddy type s on hondas and what i hear gives off a loud kinda chirp sound but the one i have gives of a decent SWWoosh but i was wondering why it would be different? also i read that a few guys with hondas didn't connect any vac source to their bov they just installed to the flange on the charge pipe and that was it....could this be the reason for the sound difference?....i read that certain cars need the line hooked up to the manifold for ecu purposes but i'm just curios if anyone knows the answer to this

-thnx