Most modern diesel engines employ one or more turbos to achieve increased power with lower emissions. The use of two turbos in some of the latest power plants leads to greater responsiveness across the rev range, with very impressive performance benefits.
Turbo powered vehicles, whether using a single or dual turbos, are particularly able to benefit from tuning modifications and can see some of the greatest increases in BHP and torque.
A general increasing output of modern diesel engines is being achieved in part through the use of advanced electronics which are able to monitor the engine and fine-tune performance whilst balancing power with fuel efficiency. You can also get more information about Powerstroke performance parts via https://puredieselpower.com/ford/7.3l-powerstroke/.
Manufacturers are also often keen to ensure that their cars and trucks return good consumption figures at common road speeds so that they appeal to consumers in a world of increasing fuel costs.
Tuning a diesel unit by professionally modifying or remapping the ECU allows the full performance potential to be fully realized and can frequently result in astounding improvements in power and torque output.
And most impressively of all, these increases in performance are often able to be achieved at the same time as increasing fuel economy meaning that the cost of the modification can be recouped by simply driving whilst enjoying that performance boost.