There are few engines in the diesel world that are as well-known as the Cummins, especially the current form of the 6.7L Cummins found in 2007 to current Ram ¾ and one-ton trucks. These engines are ...

One of the easiest ways to tune an engine's performance is with the intake manifold. Yes, the camshaft can have a bigger role in horsepower production, but a camshaft swap includes real work and more ...

Part I in the October 2002 issue began to unravel the mystery of deciphering airflow numbers that are derived from flow bench testing. We addressed the question, "Why test for airflow?" and detailed ...

Full-Race earned a CARB EO for its 3.5-liter EcoBoost exhaust manifolds. They are designed to outperform and outlive the ...