Back in the days before variable valve timing (VVT) and computer-controlled engine tuning, one of the best ways to improve stock engine performance was to install an aftermarket camshaft, a process ...

There's a lot going on inside your vehicle at any given time, whether you're idling at a red light or driving at freeway speeds. Much of this activity involves chemical reactions that — while ...

Combustion engines, the engines in gas-powered cars, only use a quarter of the fuel's potential energy while the rest is lost as heat through exhaust. Now, a study demonstrates how to convert exhaust ...

His 2016 Mark 7 VolksWagen gti is a 6-speed manual and makes 300 wheel horsepower thanks to an apr Stage 2 tune and several ...