Millions of drivers are paying extra for premium gas and getting absolutely nothing back.

Diesel engines have a steadfast reputation for reliability, longevity, and pumping out gobs of grin-inducing, low-end torque. The latter makes diesels preferable over gas engines for hauling, towing, ...

The 11,000-horsepower, nitromethane-burning engine that powers a modern Top Fuel dragster is the very definition of controlled chaos, a cacophony of explosive elements and incredible forces delicately ...

Having fuel injectors on all mass-produced vehicles is one of the biggest automotive breakthroughs of the past few decades. If you've ever gone through having to start an engine with a poorly tuned ...

There's an old saying in engine tuning that when adjusting the mixture of your engine you can be too rich a bunch of times, but only too lean once. With that in mind, determining the air-fuel ratio ...