Optimum exhaust flow is critical to maximizing the efficiency of any engine. After all, an engine is just a sophisticated air pump – and the easier it is to move air in and out, the more efficient the ...

As much as we like the 5.9L Cummins powerplant, the stock exhaust manifold is constrictive and contorted, interfering with the flow of gases to the turbo and downpipe. That, in turn, can produce the ...

Adam Metters spends the majority of his workweek sitting behind the wheel of his ’99 Dodge Ram 3500 dualie, towing heavy trailers over long distances in the Pacific Northwest. A lot of the driving ...

One of the easiest upgrades you can make to your pickup truck can also help deliver better power and improved fuel economy. In fact, if your truck is tall enough, you won't even have to put it up on ...

The exhaust tips of a diesel truck have a similar function to the muffler tips of a gasoline vehicle. It routes the exhaust gasses at the vehicle's rear, while serving as a cosmetic purpose on some ...

Even as immense as the 2017 GMC Sierra HD Diesel is, its fart cannon tailpipe looks as comically oversized as the one on your high school buddy's mad tight Honda Civic Si hatchback. As you may know, a ...