compound turbos?

Originally Posted by TopgunZ

WTF is going on with this setup? So the roots pulls air from atmosphere and then is mixed with the twin turbo's compressed air and then it all hits the plenum?? That roots is not being fed by the turbos. Which is awesome for heat, but i cant see the w2a under the sc so how does it get cooled? Im so confused and ive set one of these up myself..lol.

Also, in series type twin turbo setups, doest the smaller turbo spin WAY out of efficiency by the time the bigger one is pumping out real high end power? There is no way to clutch out or disengage the smaller turbo.Youd think that by 5,000 rpms it would be superheating the air. Anything under a T28 anyway. But youd have to go that small or you might as well go parallell or single.