When a Holset variable-geometry turbocharger (VGT) came as standard equipment on the 6.7L Cummins engine for the '071/2 model year, it was a major eye-opener. Thanks to its capability of varying the ...

ATS recently released a new compound turbo setup that is capable of almost doubling the power output of your Cummins-powered truck. It is called the Aurora Plus and will fit on any 5.9 common rail ...