Abstract: A method of operating turbochargers for use with internal combustion engines and a turbine housing therefor wherein the housing is uniquely configured so as to be able to be mounted in the engine compartment in a variety of modes and wherein the turbocharger may or may not be used in conjunction with a wastegate control. The unique configuration of the turbine housing permits the passage of exhaust gas through the interior of the turbine housing and more specifically through the extent of the internal scroll thereof wherein the exhaust gas imparts to the turbine operation peak efficiency before the driving gas is vented through a wastegate passageway at the terminus of the turbine housing as opposed to the entry thereof. The exhaust gases may also be bypassed from a point between the entry and terminus of the internal scroll.