I know that this is a roots style blower and according to everything I've read is no where near as efficient as a twin screw. My question is then why do people use it?? VMP uses it on his car and make over 700hp. It must have some type of advantage over a twin screw. Being a twin always compresses the air even in by-pass mode and the TVS doesn't compress it does this allow the TVS a chance to cool down better say on a highway cruise or at idle. What are the reason's behind some guys using it.