A turbocharger system comprising: a valve assembly that includes a housing and a valve structure disposed within the housing, the housing defining an inlet, a first outlet, and a second outlet, the inlet configured for receiving flow of an exhaust gas from an engine; a turbocharger with a turbine wheel that is configured to be driven in rotation by a first flow of the exhaust gas, the first flow received from the first outlet of the housing; a second exhaust system that is configured to receive a second flow of the exhaust gas, the second flow received from the second outlet of the housing; and the valve structure including a body configured to rotate about an axis of rotation between a first position and a second position, characterised in that the body having a first surface that projects tangentially with respect to an intermediate area and a second surface that projects tangentially with respect to the intermediate area, the intermediate area being positioned between the first and second surfaces (256, 260); the valve structure defining a flow passage with an upstream end, a downstream end, and a nonlinear axis that extends between the upstream end and the downstream end, the upstream end directed substantially along the axis of rotation and configured to receive the exhaust gas from the inlet, the downstream end configured to deliver the exhaust gas to one of the first outlet and the second outlet; the valve structure, in the first position, configured to direct the exhaust gas along the flow from the upstream end, through the flow passage, to the downstream end and the first outlet for driving the turbine wheel; the second surface of the body, with the valve structure in the first position, configured to substantially close off the second outlet; the valve structure, in the second position, configured to direct the exhaust gas along the second flow from the upstream end, through the flow passage, to the downstream end and the second outlet for delivery to the second exhaust system; the first surface of the body in the second position, configured to substantially close off the first outlet. a valve assembly that includes a housing and a valve structure disposed within the housing, the housing defining an inlet, a first outlet, and a second outlet, the inlet configured for receiving flow of an exhaust gas from an engine; a turbocharger with a turbine wheel that is configured to be driven in rotation by a first flow of the exhaust gas, the first flow received from the first outlet of the housing; a second exhaust system that is configured to receive a second flow of the exhaust gas, the second flow received from the second outlet of the housing; and the valve structure including a body configured to rotate about an axis of rotation between a first position and a second position, characterised in that the body having a first surface that projects tangentially with respect to an intermediate area and a second surface that projects tangentially with respect to the intermediate area, the intermediate area being positioned between the first and second surfaces (256, 260); the valve structure defining a flow passage with an upstream end, a downstream end, and a nonlinear axis that extends between the upstream end and the downstream end, the upstream end directed substantially along the axis of rotation and configured to receive the exhaust gas from the inlet, the downstream end configured to deliver the exhaust gas to one of the first outlet and the second outlet; the valve structure, in the first position, configured to direct the exhaust gas along the flow from the upstream end, through the flow passage, to the downstream end and the first outlet for driving the turbine wheel; the second surface of the body, with the valve structure in the first position, configured to substantially close off the second outlet; the valve structure, in the second position, configured to direct the exhaust gas along the second flow from the upstream end, through the flow passage, to the downstream end and the second outlet for delivery to the second exhaust system; the first surface of the body in the second position, configured to substantially close off the first outlet.