Improving your diesel engine's exhaust sound is about fine-tuning the tone ... However, if you decide to switch to a cat-back or a turbo-back system, the cost of replacing the axle-back setup ...

It sounds more like an old-school radial aircraft engine than anything that should power an automobile of any kind.

Noise, vibration and harshness were also ... For more information about the new 2025 Cummins 6.7 Turbo Diesel engine, visit cummins.tech/pickup.

Since 1989, RAM (earlier Dodge RAM) has been using engines made by Cummins on their popular pickup trucks. The journey, which started with the first generation 5.9-liter 160 hp turbo diesel ...