You're driving a loaded diesel rig down a mountain pass, foot hovering over the brake pedal, heart racing. How do you slow 20,000 pounds safely without cooking your brakes? Cue the exhaust brake -– ...

If you belong to the camp of people who still believe that back pressure helps your Harley-Davidson, or any engine, for that matter, we hate to break it to you, but you're wrong. Ask any engineer, ...