The concept is straight out of a high school physics class: The colder you make your intake charge, the denser, and therefore more powerful, your intake charge becomes. With more atmosphere shoved ...

Pushing the limits is in the nature of every gearhead. How much cam can you run? How big of a carb can you get away with? How much compression will pump gas hold? Those aren't just simple questions ...

Injecting water methanol into the intake of a diesel engine is a means to increasing performance, reducing exhaust gas temperature (EGT), and can also increase full economy. Snow Performance has been ...

It's a rare thing when a magazine tests the exact same product twice, but that's exactly what we're doing here. Back in our Aug. '11 issue ["Hooked On Meth"], we installed and dyno tested a Snow ...