Cummins describes the air intake system used on the ACE as a combination of its HE500 variable geometry turbocharger and a gear-driven supercharger. An aluminum jacket water-aftercooler and oil ...

The 6.7L Cummins engine is known for its reliability ... and they're made to work with engines that have either a turbocharger or a supercharger. Lowering the temperature of the intake air helps ...