There have been several people that have twin charged the 3800 with good results. I don't see how everyone says the blower becomes a restriction. It's already moving more air than the engine can move so when the turbo comes on it just packs a denser amount of air into the rotors and I seriously doubt you would flow enough to make the blower a restriction since it's always going to pass more than the engine can use, now it's just getting more dense charge that's just passing through. The nightmare of running parallel and valving so the blower is not shoving air out of the turbo causing it to slow and even having a valve would cause issues since if you have one side that's 10 PSI and the other side is 15 PSI your net pressure is 5 psi. It's just like your fuel injectors if you have 45 psi at the rail at atmospheric pressure and you have 10 psi manifold pressure the net pressure in the manifold is 35 psi. This is why they use a rising rate fuel pressure regulator, that is 1:1 so that at 10 psi manifold pressure the rail pressure is 55 psi and the net pressure is still 45 psi. on 04+ they just run a constant 65 psi and use voodoo and black magic to make it operate correctly.... Apparently...
Jeff
