Owning a Cummins-powered rig is already a flex. That deep, rumbling idle. The way the turbo whistles when you roll into the throttle. The satisfying grunt as it effortlessly tows what would make most ...

When it comes to diesel engine upgrades, some modifications enhance performance and give your engine bay a distinctive look. Among these, a custom valve cover is an upgrade that delivers functional ...

We’ve already built the transmission in our ’95 Dodge Ram 2500 (known as Triple Threat) to handle extreme horsepower and torque levels. We’ve also upgraded the nearly 300,000-mile Cummins with a new ...

The last time we hit the dyno, our 5.9L Cummins picked up a whopping 140 hp at the wheels with a relatively small 0.078-inch nitrous jet. It was obvious that our '89 Dodge, known as Project Rust ...