There's a fair bit of science behind how engine turbochargers do what they do (air pressure, compression, fuel burn efficiency, etc.), but basically it will improve an engine's power by around 30 ...

A check-engine light could be a gentle reminder or a sign of something catastrophic. We explain what a malfunction indicator light is and what you can do about it.

Removing the spark or glow plugs will release the engine compression and make this test easier to do, but is not absolutely necessary.

A car diagnostic test identifies problems within the main components of a vehicle, such as a car engine or brakes. This article discusses a car diagnostic test and attempts to explain everything ...

Knowing how compression ratios are calculated and work can lead to more horsepower on the track and more appearances in victory lane. Find all the details inside Circle Track Magazine.