As good as the 5.9-liter Cummins engine is, it could do with the nicer variable geometry turbo from the newer 6.7-liter. Is it possible to do that?

Instant throttle response, big torque, and the ability to get loads moving in a hurry were great selling points for the 2011 Super Duty. Thanks to a variable geometry turbocharger, reverse flow ...

Ford’s 6.0L Power Stroke comes from the factory with a variable-geometry turbo, or VGT turbo. The concept is a good one: The exhaust impeller’s vanes can be turned to different angles on the fly to ...