Boxer engines are popular engines used in Subaru and Porsche cars, such as the Subaru WRX STi and Porsche 911 GT3. The engines have cylinders that lay flat (not to be confused with a 180 degree V ...

VTEC is Honda's variable valve technology used to change the amount of valve lift and valve duration in the engine. By altering valve lift and duration, you can influence how much air the engine ...