Performance Diesel Inc. (PDI) recently launched its Big Boss Tuner HD, a hand-held tuner designed for fast and easy installation that will typically deliver a 10 to 15 percent increase in horsepower ...

One heavy-duty engine choice transformed a basic pickup into a platform that significantly reshaped diesel performance and ...

Mainstream diesel performance hit a home run when Dodge introduced the Cummins-powered Dodge Ram in 1989. In stock trim, the trucks were reliable yet underpowered, but it wasn’t long before ...

Despite the recent news that the Environmental Protection Agency (EPA) no longer lists emissions defeat devices as a top priority, there’s still no two ways about it: Tampering with a tune to defeat ...