i hav thought of using a flap as described by PLYNX but thought it would be a little more difficult 2 make. i was planning on using 2 throttle bodies but wasnt sure if it would leak under the pressure. i dont like the blow through method as the supercharger has 2 suck throught the turbo at low revs causing a restriction and at heigh revs it has 2 blow through the supercharger causing yet more restriction just thought my method would eliminate this. a dicharger is the name given 2 a system where a supercharger and turbo is ran on the same engine or at least thats what the european car companies call it