As far as I know, the EFR turbo is $2,400, and if you want the internal wastegate on a T4 twin scroll turbine it is another $400, which brings you to $2,800.
The internal wastegate is also only available with the T3 twin scroll turbine and the smallest a/r T4 twin scroll turbine, which means it would not work well with the VHR car, as the turbine is too small in both cases.
So even with the large 9180, with a properly sized turbine, you still need two wastegates.
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