With the Cosworth Garret T3 turbocharger and intercooler setup the engine produced . C223T turbocharged diesel engine, using a Garrett turbocharger. The VG20DET is an DOHC engine with a ceramic turbocharger and intercooler. It has 16 valves and is a DOHC engine with a turbocharger and intercooler. The compressed air is cooled by intercooler which is mounted upstream of the turbocharger. It features 16 valves, double overhead camshafts, a variable geometry turbocharger, and an intercooler. Twincharger refers to an engine with both a supercharger and a turbocharger. A bypass valve regulates the exhaust flow to each turbocharger. It was turbocharged with an air-cooled Garrett T2 turbocharger. Each bank of the V6 had its own independent turbocharger and intercooler. The engine features common rail Direct injection and a variable nozzle turbocharger. With the 6.7 L Cummins Engine came the introduction of the Variable Geometry Turbocharger (VGT). The speed of the turbocharger is controlled by a wastegate. A 2.2L CRDi diesel engine with variable geometry turbocharger (VGT) is also available. The engine has a Series Sequential Turbocharger.