Regular readers will recall last month's testing of two Motordyne bolt-ons that successfully proved Helmholtz resonance can be used to increase exhaust gas scavenging and help your ride put out a few ...

An internal combustion engine needs a few basic things in order to function: some fuel to burn, some air (and hence, oxygen) to help it burn, and a spark to set it all off. In the case of petrol ...

Most Chevy truck enthusiasts know that improving the flow of air into the engine and reducing backpressure are sure ways to make some power. But believe it or not, this process is not as simple as it ...