i was reading some stuff on how some engines, large turbo deisels mainly, use dual turbos with the large turbo feeding into the smaller one to spool it faster. now the question i have is why not use a small roots blower to help spool up a large turbo? with the blower creating boost quick off idle it seems as though it would work great and worth more power than just a turbo. has anyone ever heard of this being done? another idea i have is a turbo blowing through a draw through roots blower setup. im not sure how that would work though...ideas anyone?
