Jay Leno returned to late night television last night, making a guest appearance on The Tonight Show staring Jimmy Fallon. For car guys and gearheads, Leno’s real return to television takes place […]

Carburetor spacers are a great tuning tool. Depending on which specific carb spacer (or multiple spacers) you choose, you can add extra horsepower, particularly in the mid and upper rpm ranges. […]

One of the many appealing things about owning a truck is the sense of unlimited possibilities. You can haul stuff. You can tow boats, campers, and trailers. You can plow […]

Your dad probably taught you the importance of checking a vehicle’s oil level shortly after you got your first Big Wheel. And right around potty training, he probably also trained you to “change […]

Three-time NASCAR Sprint Cup Series champion Tony Stewart announced that 2016 will be his last season as a driver. “Next year will be my last year in the Sprint Cup Series,” Stewart said […]

Every light duty modern diesel for the past two-plus decades has been forced induction, but there’s only so much your stock turbo can do. If you want more horsepower than the stock […]

  By now, you know the factory programs your vehicle’s computer with the everyday driver in mind. That means things like power and torque are often sacrificed in favor of […]

The 9th U.S. Circuit Court of Appeals has come to the defense of Batman. According to a three-judge panel, the Batmobile is entitled to copyright protection and cannot be replicated […]

The principle is simple: Air and fuel plus ignition equals horsepower; therefore, more air and fuel equals more horsepower. It’s the equation that nitrous systems manufacturers use to help produce […]

Detonation is a great thing if you’re taking in a fireworks show or maybe watching MacGyver. Inside your engine? Not so much. In fact, it’s probably best if you avoid detonation at […]