It's a story as old as hot rodding itself. It starts with the sales pitch-"Buy my widget and your engine will gain 50 hp"-and ends with a disappointed customer with a car that sure doesn't feel like ...

One of the most common ways of measuring a diesel truck’s horsepower and torque is running it on a chassis dynamometer, known as a dyno, for short. Perhaps the simplest type of dyno is an inertia dyno ...

One of the most common ways of measuring a diesel truck’s horsepower and torque is running it on a chassis dynamometer, known as a dyno, for short. Perhaps the simplest type of dyno is an inertia dyno ...