MULTI-STAGE TURBOCHARGER SYSTEM WITH OFF-ENGINE LOW PRESSURE STAGE

A turbocharged internal combustion engine system includes at least one high pressure turbocharger system mounted on-engine and at least one low pressure turbocharger system mounted off-engine. An intercooler can further be mounted off-engine with the low pressure turbocharger and an aftercooler can be mounted on-engine with the high pressure turbocharger.