Since the topic of car mods came up in "Drac's Trip to Boston and the Elephant Walk" thread, I figured I start a thread specifically for car mods that people here at Ars had done or did themselves. I ...

Although motor vehicle enthusiasts have been modifying their cars and trucks forever, and sometimes in legally dubious ways, the practice of "rolling coal" has become an especially hot-button topic ...

We recently discussed diesel programmers and the role they play in our pursuit of higher performance. Although the OBD-II-driven devices have many different functions, changing the parameters in a ...

Learn how a 6.7 powerstroke delete kit with tuner and smart upgrades like a ccv delete 6.7 powerstroke can lower EGTs, ...

Wondering if you can install a supercharger on a diesel engine? Learn if it's possible, how it works, and whether it's a smart performance upgrade.

If you're into diesel trucks, you may already be aware of the fact that a thriving market exists for aftermarket enhancements and modifications. There are various ways to get more horsepower out of ...

Remember the month of September 2015? That’s when the Environmental Protection Agency opened an investigation into Volkswagen for using illegal software in turbo diesel-engined vehicles. The ...