Husky Number 161 run by Claudio "Burro" Rodriguez in this years Dakar was a 450 EFI bike with a KTM 640 ADV Tank.
They set up the bike with an external fuel pump and pressure regulator.
According to Alvaro, the guy who built the bike, this is how he set up the system:
The fuel pump is an external Walbro heavy duty designed for this purpose. The regulator is a Bosch put into the throttle body. This is an open circuit in order to keep cold the fuel pump.
Picture of the fuel pump installation:
Not a whole lot of detail.
Additional Pictures of the set up here: