Reading through the site I would say no. Using the exhaust gas as input for the turbine will have horrible efficiencies for powering everything he listed. Also, on the "How turbochargers work" page he stated that he uses the compressed air from the turbocharger to directly power a turbine. A turbine and a compressor can be thought of as opposite cycles of the same mechanism...one puts work in and changes pressure, the other changes pressure and gets work out. You would at best be getting the same air and energy as not having a turbo, but since there are mech losses that wouldn't be the case.
To sum, I don't think the heated exhaust would provide enough power for the turbo, water pump, etc as he suggests, and his compressor/turbine combo wouldn't work as he describes (unless I misinterpreted what he stated).